RHSA-2026:28047
Vulnerability from csaf_redhat - Published: 2026-06-22 21:01 - Updated: 2026-06-24 08:04Summary
Red Hat Security Advisory: Red Hat OpenStack Platform 17.1 (etcd) security update
Severity
Important
Notes
Topic: An update for etcd is now available for Red Hat OpenStack Platform 17.1
(Wallaby).
Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.
Details: etcd is a highly-available key value store for shared configuration.
Security Fix(es):
* net/url: Memory exhaustion in query parameter parsing in net/url
(CVE-2025-61726)
* golang: Denial of Service due to excessive resource consumption via
crafted certificate (CVE-2025-61729)
* Incorrect parsing of IPv6 host literals in net/url (CVE-2026-25679)
* Incorrect enforcement of email constraints in crypto/x509
(CVE-2026-27137)
* crypto/tls: golang: Go: Denial of Service vulnerability in certificate
chain building (CVE-2026-32280)
* golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update
messages (CVE-2026-32283)
* google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to
improper HTTP/2 path validation (CVE-2026-33186)
* golang: Go crypto/x509: Certificate validation bypass due to incorrect
DNS constraint application (CVE-2026-33810)
* crypto/tls: Incorrect certificate validation during TLS session
resumption (CVE-2025-68121)
* internal/syscall/unix: Root.Chmod can follow symlinks out of the root
(CVE-2026-32282)
* etcd: Authorization bypass allows information disclosure and denial of
service (CVE-2026-33413)
For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in the net/url package in the Go standard library. The package does not enforce a limit on the number of unique query parameters it parses. A Go application using the net/http.Request.ParseForm method will try to process all parameters provided in the request. A specially crafted HTTP request containing a massive number of query parameters will cause the application to consume an excessive amount of memory, eventually causing the application to crash or become unresponsive, resulting in a denial of service.
7.5 (High)
Affected products
Fixed
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Important
A flaw was found in golang. A remote attacker could exploit this vulnerability by providing a specially crafted certificate during the error string construction process within the `HostnameError.Error()` function. This flaw, caused by unbounded string concatenation, leads to excessive resource consumption. Successful exploitation can result in a denial of service (DoS) for the affected system.
7.5 (High)
Affected products
Fixed
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Important
A flaw was found in the crypto/tls component. This vulnerability occurs during Transport Layer Security (TLS) session resumption when certificate authority (CA) settings are modified between the initial and resumed handshakes. An attacker could exploit this to bypass certificate validation, allowing a client or server to establish a connection that should have been rejected. This could lead to an authentication bypass under specific conditions.
7.4 (High)
Affected products
Fixed
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
The Go standard library function net/url.Parse insufficiently validated the host/authority component and accepted some invalid URLs by effectively treating garbage before an IP-literal as ignorable. The function should have rejected this as invalid.
7.5 (High)
Affected products
Fixed
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Important
A certificate validation flaw has been discovered in the golang crypto/x509 module. When verifying a certificate chain which contains a certificate containing multiple email address constraints which share common local portions but different domain portions, these constraints will not be properly applied, and only the last constraint will be considered.
7.5 (High)
Affected products
Fixed
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Important
A flaw was found in the Go standard library packages `crypto/x509` and `crypto/tls`. During the process of building a certificate chain, an attacker can provide a large number of intermediate certificates. This excessive input is not properly limited, leading to an uncontrolled amount of work being performed. This can result in a denial of service (DoS) condition, making the affected system or application unavailable to legitimate users.
7.5 (High)
Affected products
Fixed
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Important
A flaw was found in the internal/syscall/unix package in the Go standard library. If the target of the `Root.Chmod` function is replaced with a symbolic link during execution, specifically after `Root.Chmod` checks the target but before acting, the `chmod` operation will be performed on the file the symbolic link points to. This issue can bypass directory restrictions and lead to unauthorized permission changes on the filesystem.
7.8 (High)
Affected products
Fixed
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Moderate
A flaw was found in the `crypto/tls` package within the Go (golang) standard library, specifically affecting TLS 1.3 connections. A remote attacker can exploit this vulnerability by sending multiple key update messages in a single record after the handshake. This can cause the connection to deadlock, leading to uncontrolled consumption of resources and ultimately a denial of service (DoS).
7.5 (High)
Affected products
Fixed
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Important
A flaw was found in gRPC-Go, the Go language implementation of gRPC. This vulnerability, an authorization bypass, is caused by improper input validation of the HTTP/2 `:path` pseudo-header. A remote attacker can exploit this by sending raw HTTP/2 frames with a malformed `:path` that omits the mandatory leading slash. This allows the attacker to bypass defined security policies, potentially leading to unauthorized access to services or information disclosure.
9.1 (Critical)
Affected products
Fixed
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Important
A flaw was found in etcd, a distributed key-value store. Unauthorized users can bypass authentication or authorization checks when the gRPC API is exposed to untrusted clients. This allows them to access sensitive cluster topology information, disrupt operations through alarms, interfere with lease management, and trigger data compaction, leading to permanent data loss and disruption of critical workflows. This vulnerability can result in information disclosure and denial of service.
7.7 (High)
Affected products
Fixed
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Moderate
A flaw was found in the `crypto/x509` package within Go (golang). When verifying a certificate chain, excluded DNS (Domain Name System) constraints are not correctly applied to wildcard DNS Subject Alternative Names (SANs) if the case of the SAN differs from the constraint. This oversight could allow an attacker to bypass certificate validation, potentially leading to the acceptance of a malicious certificate that should have been rejected. This issue specifically impacts the validation of trusted certificate chains.
8.8 (High)
Affected products
Fixed
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Important
References
90 references
{
"document": {
"aggregate_severity": {
"namespace": "https://access.redhat.com/security/updates/classification/",
"text": "Important"
},
"category": "csaf_security_advisory",
"csaf_version": "2.0",
"distribution": {
"text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
"tlp": {
"label": "WHITE",
"url": "https://www.first.org/tlp/"
}
},
"lang": "en",
"notes": [
{
"category": "summary",
"text": "An update for etcd is now available for Red Hat OpenStack Platform 17.1\n(Wallaby).\n\nRed Hat Product Security has rated this update as having a security impact\nof Important. A Common Vulnerability Scoring System (CVSS) base score,\nwhich gives a detailed severity rating, is available for each vulnerability\nfrom the CVE link(s) in the References section.",
"title": "Topic"
},
{
"category": "general",
"text": "etcd is a highly-available key value store for shared configuration.\n\nSecurity Fix(es):\n\n* net/url: Memory exhaustion in query parameter parsing in net/url\n(CVE-2025-61726)\n\n* golang: Denial of Service due to excessive resource consumption via\ncrafted certificate (CVE-2025-61729)\n\n* Incorrect parsing of IPv6 host literals in net/url (CVE-2026-25679)\n\n* Incorrect enforcement of email constraints in crypto/x509\n(CVE-2026-27137)\n\n* crypto/tls: golang: Go: Denial of Service vulnerability in certificate\nchain building (CVE-2026-32280)\n\n* golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update\nmessages (CVE-2026-32283)\n\n* google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to\nimproper HTTP/2 path validation (CVE-2026-33186)\n\n* golang: Go crypto/x509: Certificate validation bypass due to incorrect\nDNS constraint application (CVE-2026-33810)\n\n* crypto/tls: Incorrect certificate validation during TLS session\nresumption (CVE-2025-68121)\n\n* internal/syscall/unix: Root.Chmod can follow symlinks out of the root\n(CVE-2026-32282)\n\n* etcd: Authorization bypass allows information disclosure and denial of\nservice (CVE-2026-33413)\n\nFor more details about the security issue(s), including the impact, a CVSS\nscore, acknowledgments, and other related information, refer to the CVE\npage listed in the References section.",
"title": "Details"
},
{
"category": "legal_disclaimer",
"text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.",
"title": "Terms of Use"
}
],
"publisher": {
"category": "vendor",
"contact_details": "https://access.redhat.com/security/team/contact/",
"issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
"name": "Red Hat Product Security",
"namespace": "https://www.redhat.com"
},
"references": [
{
"category": "self",
"summary": "https://access.redhat.com/errata/RHSA-2026:28047",
"url": "https://access.redhat.com/errata/RHSA-2026:28047"
},
{
"category": "external",
"summary": "https://access.redhat.com/security/updates/classification/#important",
"url": "https://access.redhat.com/security/updates/classification/#important"
},
{
"category": "external",
"summary": "2418462",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2418462"
},
{
"category": "external",
"summary": "2434432",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2434432"
},
{
"category": "external",
"summary": "2437111",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2437111"
},
{
"category": "external",
"summary": "2445356",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2445356"
},
{
"category": "external",
"summary": "2449833",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2449833"
},
{
"category": "external",
"summary": "2451728",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451728"
},
{
"category": "external",
"summary": "2456336",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456336"
},
{
"category": "external",
"summary": "2456338",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456338"
},
{
"category": "external",
"summary": "2456339",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456339"
},
{
"category": "self",
"summary": "Canonical URL",
"url": "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_28047.json"
}
],
"title": "Red Hat Security Advisory: Red Hat OpenStack Platform 17.1 (etcd) security update",
"tracking": {
"current_release_date": "2026-06-24T08:04:15+00:00",
"generator": {
"date": "2026-06-24T08:04:15+00:00",
"engine": {
"name": "Red Hat SDEngine",
"version": "5.0.0"
}
},
"id": "RHSA-2026:28047",
"initial_release_date": "2026-06-22T21:01:08+00:00",
"revision_history": [
{
"date": "2026-06-22T21:01:08+00:00",
"number": "1",
"summary": "Initial version"
},
{
"date": "2026-06-22T21:01:08+00:00",
"number": "2",
"summary": "Last updated version"
},
{
"date": "2026-06-24T08:04:15+00:00",
"number": "3",
"summary": "Last generated version"
}
],
"status": "final",
"version": "3"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_name",
"name": "Red Hat OpenStack Platform 17.1",
"product": {
"name": "Red Hat OpenStack Platform 17.1",
"product_id": "9Base-RHOS-17.1",
"product_identification_helper": {
"cpe": "cpe:/a:redhat:openstack:17.1::el9"
}
}
}
],
"category": "product_family",
"name": "Red Hat OpenStack Platform"
},
{
"branches": [
{
"category": "product_version",
"name": "etcd-0:3.4.26-9.5.el9ost.src",
"product": {
"name": "etcd-0:3.4.26-9.5.el9ost.src",
"product_id": "etcd-0:3.4.26-9.5.el9ost.src",
"product_identification_helper": {
"purl": "pkg:rpm/redhat/etcd@3.4.26-9.5.el9ost?arch=src"
}
}
}
],
"category": "architecture",
"name": "src"
},
{
"branches": [
{
"category": "product_version",
"name": "etcd-0:3.4.26-9.5.el9ost.x86_64",
"product": {
"name": "etcd-0:3.4.26-9.5.el9ost.x86_64",
"product_id": "etcd-0:3.4.26-9.5.el9ost.x86_64",
"product_identification_helper": {
"purl": "pkg:rpm/redhat/etcd@3.4.26-9.5.el9ost?arch=x86_64"
}
}
},
{
"category": "product_version",
"name": "etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64",
"product": {
"name": "etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64",
"product_id": "etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64",
"product_identification_helper": {
"purl": "pkg:rpm/redhat/etcd-debugsource@3.4.26-9.5.el9ost?arch=x86_64"
}
}
},
{
"category": "product_version",
"name": "etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"product": {
"name": "etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"product_id": "etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"product_identification_helper": {
"purl": "pkg:rpm/redhat/etcd-debuginfo@3.4.26-9.5.el9ost?arch=x86_64"
}
}
}
],
"category": "architecture",
"name": "x86_64"
}
],
"category": "vendor",
"name": "Red Hat"
}
],
"relationships": [
{
"category": "default_component_of",
"full_product_name": {
"name": "etcd-0:3.4.26-9.5.el9ost.src as a component of Red Hat OpenStack Platform 17.1",
"product_id": "9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src"
},
"product_reference": "etcd-0:3.4.26-9.5.el9ost.src",
"relates_to_product_reference": "9Base-RHOS-17.1"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "etcd-0:3.4.26-9.5.el9ost.x86_64 as a component of Red Hat OpenStack Platform 17.1",
"product_id": "9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64"
},
"product_reference": "etcd-0:3.4.26-9.5.el9ost.x86_64",
"relates_to_product_reference": "9Base-RHOS-17.1"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64 as a component of Red Hat OpenStack Platform 17.1",
"product_id": "9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64"
},
"product_reference": "etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"relates_to_product_reference": "9Base-RHOS-17.1"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64 as a component of Red Hat OpenStack Platform 17.1",
"product_id": "9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
},
"product_reference": "etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64",
"relates_to_product_reference": "9Base-RHOS-17.1"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2025-61726",
"cwe": {
"id": "CWE-770",
"name": "Allocation of Resources Without Limits or Throttling"
},
"discovery_date": "2026-01-28T20:01:42.791305+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2434432"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the net/url package in the Go standard library. The package does not enforce a limit on the number of unique query parameters it parses. A Go application using the net/http.Request.ParseForm method will try to process all parameters provided in the request. A specially crafted HTTP request containing a massive number of query parameters will cause the application to consume an excessive amount of memory, eventually causing the application to crash or become unresponsive, resulting in a denial of service.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "golang: net/url: Memory exhaustion in query parameter parsing in net/url",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "To exploit this flaw, an attacker must be able to send a specially crafted HTTP request to an application parsing URL-encoded forms with net/url, specifically a request containing a large number of unique query parameters. The request will cause the application to consume an excessive amount of memory and eventually result in a denial of service, with no impact to confidentiality or integrity. Due to this reason, this vulnerability has been rated with an important severity.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2025-61726"
},
{
"category": "external",
"summary": "RHBZ#2434432",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2434432"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2025-61726",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-61726"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-61726",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-61726"
},
{
"category": "external",
"summary": "https://go.dev/cl/736712",
"url": "https://go.dev/cl/736712"
},
{
"category": "external",
"summary": "https://go.dev/issue/77101",
"url": "https://go.dev/issue/77101"
},
{
"category": "external",
"summary": "https://groups.google.com/g/golang-announce/c/Vd2tYVM8eUc",
"url": "https://groups.google.com/g/golang-announce/c/Vd2tYVM8eUc"
},
{
"category": "external",
"summary": "https://pkg.go.dev/vuln/GO-2026-4341",
"url": "https://pkg.go.dev/vuln/GO-2026-4341"
}
],
"release_date": "2026-01-28T19:30:31.215000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-06-22T21:01:08+00:00",
"details": "For details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:28047"
},
{
"category": "workaround",
"details": "Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.",
"product_ids": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "golang: net/url: Memory exhaustion in query parameter parsing in net/url"
},
{
"cve": "CVE-2025-61729",
"cwe": {
"id": "CWE-1050",
"name": "Excessive Platform Resource Consumption within a Loop"
},
"discovery_date": "2025-12-02T20:01:45.330964+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2418462"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in golang. A remote attacker could exploit this vulnerability by providing a specially crafted certificate during the error string construction process within the `HostnameError.Error()` function. This flaw, caused by unbounded string concatenation, leads to excessive resource consumption. Successful exploitation can result in a denial of service (DoS) for the affected system.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "crypto/x509: golang: Denial of Service due to excessive resource consumption via crafted certificate",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2025-61729"
},
{
"category": "external",
"summary": "RHBZ#2418462",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2418462"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2025-61729",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-61729"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-61729",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-61729"
},
{
"category": "external",
"summary": "https://go.dev/cl/725920",
"url": "https://go.dev/cl/725920"
},
{
"category": "external",
"summary": "https://go.dev/issue/76445",
"url": "https://go.dev/issue/76445"
},
{
"category": "external",
"summary": "https://groups.google.com/g/golang-announce/c/8FJoBkPddm4",
"url": "https://groups.google.com/g/golang-announce/c/8FJoBkPddm4"
},
{
"category": "external",
"summary": "https://pkg.go.dev/vuln/GO-2025-4155",
"url": "https://pkg.go.dev/vuln/GO-2025-4155"
}
],
"release_date": "2025-12-02T18:54:10.166000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-06-22T21:01:08+00:00",
"details": "For details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:28047"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "crypto/x509: golang: Denial of Service due to excessive resource consumption via crafted certificate"
},
{
"cve": "CVE-2025-68121",
"discovery_date": "2026-02-05T18:01:30.086058+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2437111"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the crypto/tls component. This vulnerability occurs during Transport Layer Security (TLS) session resumption when certificate authority (CA) settings are modified between the initial and resumed handshakes. An attacker could exploit this to bypass certificate validation, allowing a client or server to establish a connection that should have been rejected. This could lead to an authentication bypass under specific conditions.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "crypto/tls: crypto/tls: Incorrect certificate validation during TLS session resumption",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This is a moderate flaw because it only occurs under specific conditions, such as TLS session resumption with runtime changes to certificate authority settings. Exploitation is not straightforward and requires a controlled setup. The impact is limited to certificate validation within the same component and does not affect system availability.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2025-68121"
},
{
"category": "external",
"summary": "RHBZ#2437111",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2437111"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2025-68121",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-68121"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-68121",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68121"
},
{
"category": "external",
"summary": "https://go.dev/cl/737700",
"url": "https://go.dev/cl/737700"
},
{
"category": "external",
"summary": "https://go.dev/issue/77217",
"url": "https://go.dev/issue/77217"
},
{
"category": "external",
"summary": "https://groups.google.com/g/golang-announce/c/K09ubi9FQFk",
"url": "https://groups.google.com/g/golang-announce/c/K09ubi9FQFk"
},
{
"category": "external",
"summary": "https://pkg.go.dev/vuln/GO-2026-4337",
"url": "https://pkg.go.dev/vuln/GO-2026-4337"
}
],
"release_date": "2026-02-05T17:48:44.141000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-06-22T21:01:08+00:00",
"details": "For details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:28047"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"products": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "crypto/tls: crypto/tls: Incorrect certificate validation during TLS session resumption"
},
{
"cve": "CVE-2026-25679",
"cwe": {
"id": "CWE-1286",
"name": "Improper Validation of Syntactic Correctness of Input"
},
"discovery_date": "2026-03-06T22:02:11.567841+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2445356"
}
],
"notes": [
{
"category": "description",
"text": "The Go standard library function net/url.Parse insufficiently validated the host/authority component and accepted some invalid URLs by effectively treating garbage before an IP-literal as ignorable. The function should have rejected this as invalid.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "net/url: Incorrect parsing of IPv6 host literals in net/url",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-25679"
},
{
"category": "external",
"summary": "RHBZ#2445356",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2445356"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-25679",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-25679"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-25679",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25679"
},
{
"category": "external",
"summary": "https://go.dev/cl/752180",
"url": "https://go.dev/cl/752180"
},
{
"category": "external",
"summary": "https://go.dev/issue/77578",
"url": "https://go.dev/issue/77578"
},
{
"category": "external",
"summary": "https://groups.google.com/g/golang-announce/c/EdhZqrQ98hk",
"url": "https://groups.google.com/g/golang-announce/c/EdhZqrQ98hk"
},
{
"category": "external",
"summary": "https://pkg.go.dev/vuln/GO-2026-4601",
"url": "https://pkg.go.dev/vuln/GO-2026-4601"
}
],
"release_date": "2026-03-06T21:28:14.211000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-06-22T21:01:08+00:00",
"details": "For details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:28047"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
"product_ids": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "net/url: Incorrect parsing of IPv6 host literals in net/url"
},
{
"cve": "CVE-2026-27137",
"cwe": {
"id": "CWE-295",
"name": "Improper Certificate Validation"
},
"discovery_date": "2026-03-06T22:01:38.859733+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2445345"
}
],
"notes": [
{
"category": "description",
"text": "A certificate validation flaw has been discovered in the golang crypto/x509 module. When verifying a certificate chain which contains a certificate containing multiple email address constraints which share common local portions but different domain portions, these constraints will not be properly applied, and only the last constraint will be considered.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "crypto/x509: Incorrect enforcement of email constraints in crypto/x509",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-27137"
},
{
"category": "external",
"summary": "RHBZ#2445345",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2445345"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-27137",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-27137"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-27137",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27137"
},
{
"category": "external",
"summary": "https://go.dev/cl/752182",
"url": "https://go.dev/cl/752182"
},
{
"category": "external",
"summary": "https://go.dev/issue/77952",
"url": "https://go.dev/issue/77952"
},
{
"category": "external",
"summary": "https://groups.google.com/g/golang-announce/c/EdhZqrQ98hk",
"url": "https://groups.google.com/g/golang-announce/c/EdhZqrQ98hk"
},
{
"category": "external",
"summary": "https://pkg.go.dev/vuln/GO-2026-4599",
"url": "https://pkg.go.dev/vuln/GO-2026-4599"
}
],
"release_date": "2026-03-06T21:28:13.748000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-06-22T21:01:08+00:00",
"details": "For details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:28047"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
"product_ids": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "crypto/x509: Incorrect enforcement of email constraints in crypto/x509"
},
{
"cve": "CVE-2026-32280",
"cwe": {
"id": "CWE-770",
"name": "Allocation of Resources Without Limits or Throttling"
},
"discovery_date": "2026-04-08T02:01:19.572351+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2456339"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the Go standard library packages `crypto/x509` and `crypto/tls`. During the process of building a certificate chain, an attacker can provide a large number of intermediate certificates. This excessive input is not properly limited, leading to an uncontrolled amount of work being performed. This can result in a denial of service (DoS) condition, making the affected system or application unavailable to legitimate users.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-32280"
},
{
"category": "external",
"summary": "RHBZ#2456339",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456339"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-32280",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-32280"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-32280",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32280"
},
{
"category": "external",
"summary": "https://go.dev/cl/758320",
"url": "https://go.dev/cl/758320"
},
{
"category": "external",
"summary": "https://go.dev/issue/78282",
"url": "https://go.dev/issue/78282"
},
{
"category": "external",
"summary": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU",
"url": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"
},
{
"category": "external",
"summary": "https://pkg.go.dev/vuln/GO-2026-4947",
"url": "https://pkg.go.dev/vuln/GO-2026-4947"
}
],
"release_date": "2026-04-08T01:06:58.595000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-06-22T21:01:08+00:00",
"details": "For details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:28047"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building"
},
{
"cve": "CVE-2026-32282",
"cwe": {
"id": "CWE-367",
"name": "Time-of-check Time-of-use (TOCTOU) Race Condition"
},
"discovery_date": "2026-04-08T02:01:12.683211+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2456336"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the internal/syscall/unix package in the Go standard library. If the target of the `Root.Chmod` function is replaced with a symbolic link during execution, specifically after `Root.Chmod` checks the target but before acting, the `chmod` operation will be performed on the file the symbolic link points to. This issue can bypass directory restrictions and lead to unauthorized permission changes on the filesystem.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "golang: internal/syscall/unix: Root.Chmod can follow symlinks out of the root",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "To exploit this issue, an attacker needs access to the system and the required permissions to create a symbolic link. Additionally, the attacker must swap the target file with a symbolic link in the exact window after the `Root.Chmod` function checks its target but before acting. Due to these conditions, this flaw has been rated with a moderate severity.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-32282"
},
{
"category": "external",
"summary": "RHBZ#2456336",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456336"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-32282",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-32282"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-32282",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32282"
},
{
"category": "external",
"summary": "https://go.dev/cl/763761",
"url": "https://go.dev/cl/763761"
},
{
"category": "external",
"summary": "https://go.dev/issue/78293",
"url": "https://go.dev/issue/78293"
},
{
"category": "external",
"summary": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU",
"url": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"
},
{
"category": "external",
"summary": "https://pkg.go.dev/vuln/GO-2026-4864",
"url": "https://pkg.go.dev/vuln/GO-2026-4864"
}
],
"release_date": "2026-04-08T01:06:55.953000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-06-22T21:01:08+00:00",
"details": "For details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:28047"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
"product_ids": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "golang: internal/syscall/unix: Root.Chmod can follow symlinks out of the root"
},
{
"cve": "CVE-2026-32283",
"cwe": {
"id": "CWE-764",
"name": "Multiple Locks of a Critical Resource"
},
"discovery_date": "2026-04-08T02:01:16.213799+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2456338"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the `crypto/tls` package within the Go (golang) standard library, specifically affecting TLS 1.3 connections. A remote attacker can exploit this vulnerability by sending multiple key update messages in a single record after the handshake. This can cause the connection to deadlock, leading to uncontrolled consumption of resources and ultimately a denial of service (DoS).",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-32283"
},
{
"category": "external",
"summary": "RHBZ#2456338",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456338"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-32283",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-32283"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-32283",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32283"
},
{
"category": "external",
"summary": "https://go.dev/cl/763767",
"url": "https://go.dev/cl/763767"
},
{
"category": "external",
"summary": "https://go.dev/issue/78334",
"url": "https://go.dev/issue/78334"
},
{
"category": "external",
"summary": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU",
"url": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"
},
{
"category": "external",
"summary": "https://pkg.go.dev/vuln/GO-2026-4870",
"url": "https://pkg.go.dev/vuln/GO-2026-4870"
}
],
"release_date": "2026-04-08T01:06:57.670000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-06-22T21:01:08+00:00",
"details": "For details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:28047"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages"
},
{
"cve": "CVE-2026-33186",
"cwe": {
"id": "CWE-551",
"name": "Incorrect Behavior Order: Authorization Before Parsing and Canonicalization"
},
"discovery_date": "2026-03-20T23:02:27.802640+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2449833"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in gRPC-Go, the Go language implementation of gRPC. This vulnerability, an authorization bypass, is caused by improper input validation of the HTTP/2 `:path` pseudo-header. A remote attacker can exploit this by sending raw HTTP/2 frames with a malformed `:path` that omits the mandatory leading slash. This allows the attacker to bypass defined security policies, potentially leading to unauthorized access to services or information disclosure.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-33186"
},
{
"category": "external",
"summary": "RHBZ#2449833",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2449833"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-33186",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-33186"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-33186",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33186"
},
{
"category": "external",
"summary": "https://github.com/grpc/grpc-go/security/advisories/GHSA-p77j-4mvh-x3m3",
"url": "https://github.com/grpc/grpc-go/security/advisories/GHSA-p77j-4mvh-x3m3"
}
],
"release_date": "2026-03-20T22:23:32.147000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-06-22T21:01:08+00:00",
"details": "For details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:28047"
},
{
"category": "workaround",
"details": "To mitigate this issue, implement infrastructure-level normalization to ensure all incoming HTTP/2 `:path` headers are properly formatted with a leading slash before reaching the gRPC-Go server. This can be achieved by configuring a reverse proxy or API gateway to validate and normalize the `:path` header. Ensure that any such intermediary is properly configured and restarted to apply the changes, which may temporarily impact service availability.",
"product_ids": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 9.1,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"products": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation"
},
{
"cve": "CVE-2026-33413",
"cwe": {
"id": "CWE-306",
"name": "Missing Authentication for Critical Function"
},
"discovery_date": "2026-03-26T14:03:01.896580+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2451728"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in etcd, a distributed key-value store. Unauthorized users can bypass authentication or authorization checks when the gRPC API is exposed to untrusted clients. This allows them to access sensitive cluster topology information, disrupt operations through alarms, interfere with lease management, and trigger data compaction, leading to permanent data loss and disruption of critical workflows. This vulnerability can result in information disclosure and denial of service.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "etcd: etcd: Authorization bypass allows information disclosure and denial of service",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This flaw in etcd allows unauthorized users to bypass authentication or authorization checks when the gRPC API is exposed to untrusted clients and etcd\u0027s built-in authentication is enabled. This can lead to information disclosure and denial of service. Typical Red Hat OpenShift Container Platform and Kubernetes deployments are not affected, as the Kubernetes API server handles authentication and authorization independently of etcd\u0027s internal mechanisms.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-33413"
},
{
"category": "external",
"summary": "RHBZ#2451728",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451728"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-33413",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-33413"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-33413",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33413"
},
{
"category": "external",
"summary": "https://github.com/etcd-io/etcd/security/advisories/GHSA-q8m4-xhhv-38mg",
"url": "https://github.com/etcd-io/etcd/security/advisories/GHSA-q8m4-xhhv-38mg"
}
],
"release_date": "2026-03-26T13:36:10.919000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-06-22T21:01:08+00:00",
"details": "For details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:28047"
},
{
"category": "workaround",
"details": "Restrict network access to etcd server ports to ensure only trusted components can establish connections. Implement strong client identity at the transport layer, such as mTLS, with tightly scoped client certificate distribution. This will limit unauthorized access to etcd functions.",
"product_ids": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.7,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:H",
"version": "3.1"
},
"products": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "etcd: etcd: Authorization bypass allows information disclosure and denial of service"
},
{
"cve": "CVE-2026-33810",
"cwe": {
"id": "CWE-1289",
"name": "Improper Validation of Unsafe Equivalence in Input"
},
"discovery_date": "2026-04-08T02:01:09.100830+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2456335"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the `crypto/x509` package within Go (golang). When verifying a certificate chain, excluded DNS (Domain Name System) constraints are not correctly applied to wildcard DNS Subject Alternative Names (SANs) if the case of the SAN differs from the constraint. This oversight could allow an attacker to bypass certificate validation, potentially leading to the acceptance of a malicious certificate that should have been rejected. This issue specifically impacts the validation of trusted certificate chains.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "crypto/x509: golang: Go crypto/x509: Certificate validation bypass due to incorrect DNS constraint application",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-33810"
},
{
"category": "external",
"summary": "RHBZ#2456335",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456335"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-33810",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-33810"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-33810",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33810"
},
{
"category": "external",
"summary": "https://go.dev/cl/763763",
"url": "https://go.dev/cl/763763"
},
{
"category": "external",
"summary": "https://go.dev/issue/78332",
"url": "https://go.dev/issue/78332"
},
{
"category": "external",
"summary": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU",
"url": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"
},
{
"category": "external",
"summary": "https://pkg.go.dev/vuln/GO-2026-4866",
"url": "https://pkg.go.dev/vuln/GO-2026-4866"
}
],
"release_date": "2026-04-08T01:06:56.546000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-06-22T21:01:08+00:00",
"details": "For details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
"product_ids": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:28047"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:L",
"version": "3.1"
},
"products": [
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.src",
"9Base-RHOS-17.1:etcd-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debuginfo-0:3.4.26-9.5.el9ost.x86_64",
"9Base-RHOS-17.1:etcd-debugsource-0:3.4.26-9.5.el9ost.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "crypto/x509: golang: Go crypto/x509: Certificate validation bypass due to incorrect DNS constraint application"
}
]
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…