RHSA-2026:54287

Vulnerability from csaf_redhat - Published: 2026-08-12 10:22 - Updated: 2026-08-21 21:50
Summary
Red Hat Security Advisory: Red Hat OpenShift Workload Availability Operator v0.12.1 security update
Severity
Important
Notes
Topic: This is an updated version of the Node Health Check Operator. This Operator is delivered by Red Hat Workload Availability (RHWA).
Details: The Node Health Check Operator deploys the Node Health Check controller. The controller identifies unhealthy nodes and uses a remediation provider to remediate the unhealthy nodes. You can install either the Self Node Remediation Operator, the Fence Agents Remediation Operator, or the Machine Deletion Remedation Operator as a remediation provider.
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 golang.org/x/net/html. A remote attacker could exploit this vulnerability by providing specially crafted HTML. When this arbitrary HTML is parsed and rendered, it can result in an unexpected HTML tree, bypassing input sanitization. This can be leveraged to execute Cross-Site Scripting (XSS) attacks, potentially leading to arbitrary code execution in applications that use the affected component.

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:6ece0ac34989350e9be7613fc533767af9ad7bf9544bad6ad297dcece2b6ca64_amd64
Vendor Fix fix
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:82081eb65c0d359b5d4895e72ef21955a7703a533d2a39a74e0084d398807a45_arm64
Vendor Fix fix
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:ae120a374dbc2935cd270351ead5a944e84fb305c704df8f41d72e32d69fbd97_ppc64le
Vendor Fix fix
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:d548561809fc5d0423fa4dfde0a906b986170f16262c47077e1a6e6889c5d5a5_s390x
Vendor Fix fix
Workaround
Product Identifier Version Remediation
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:07a04832975f5740a8d36db33e304d34f4e38a870788de05112a5c31505d148e_amd64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:b5355c3c85d9e34f22a46bb3f190bd2bfcb4f27109858010c80539c6fbeccdbe_s390x
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:b906c8de5f631902847740e7ac105b74c80ab488868fde7d750dff5881ea8e5d_arm64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:ee2f7805d99ed025739bf2187649f0171c263baa0d844fe652d68b441d6dcd79_ppc64le
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-operator-bundle@sha256:4214978132ffd6f9d840e2be8df4e9b85cf13d2740ba4f82fbe72f3d93d6dee5_amd64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:0b237c4474bb9a64a70308f35a0645fecb20efa27d63e706b27ca091d255b311_s390x
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:2ed8b109c7ffb6821590ec0b554f894b7c714c1b9632be260818f7178daf7baa_arm64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:5e0f6c04a44a3050869c00524f214bfd72ca34aadbf71b80f0d12cc3022d4f2b_ppc64le
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:dbdf7d0d139bdd2661a486493805540cd6e9277aaadbde7a1414ccdc157a20e5_amd64
Workaround
Threats
Impact Important

A flaw was found in golang.org/x/net/html. When arbitrary HTML is parsed and then rendered, it can result in an unexpected HTML tree. This allows an attacker to bypass HTML sanitization mechanisms, leading to Cross-Site Scripting (XSS) attacks in applications. Such attacks can result in information disclosure or arbitrary code execution.

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:6ece0ac34989350e9be7613fc533767af9ad7bf9544bad6ad297dcece2b6ca64_amd64
Vendor Fix fix
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:82081eb65c0d359b5d4895e72ef21955a7703a533d2a39a74e0084d398807a45_arm64
Vendor Fix fix
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:ae120a374dbc2935cd270351ead5a944e84fb305c704df8f41d72e32d69fbd97_ppc64le
Vendor Fix fix
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:d548561809fc5d0423fa4dfde0a906b986170f16262c47077e1a6e6889c5d5a5_s390x
Vendor Fix fix
Workaround
Product Identifier Version Remediation
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:07a04832975f5740a8d36db33e304d34f4e38a870788de05112a5c31505d148e_amd64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:b5355c3c85d9e34f22a46bb3f190bd2bfcb4f27109858010c80539c6fbeccdbe_s390x
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:b906c8de5f631902847740e7ac105b74c80ab488868fde7d750dff5881ea8e5d_arm64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:ee2f7805d99ed025739bf2187649f0171c263baa0d844fe652d68b441d6dcd79_ppc64le
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-operator-bundle@sha256:4214978132ffd6f9d840e2be8df4e9b85cf13d2740ba4f82fbe72f3d93d6dee5_amd64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:0b237c4474bb9a64a70308f35a0645fecb20efa27d63e706b27ca091d255b311_s390x
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:2ed8b109c7ffb6821590ec0b554f894b7c714c1b9632be260818f7178daf7baa_arm64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:5e0f6c04a44a3050869c00524f214bfd72ca34aadbf71b80f0d12cc3022d4f2b_ppc64le
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:dbdf7d0d139bdd2661a486493805540cd6e9277aaadbde7a1414ccdc157a20e5_amd64
Workaround
Threats
Impact Important

A flaw was found in the `net` package of Go (golang), specifically when using the `LookupCNAME` function with the `cgo` DNS resolver. A remote attacker could exploit this by providing a very long Canonical Name (CNAME) response. This can trigger a double-free of C memory, leading to a crash and a Denial of Service (DoS) for the affected application.

CWE-1341 - Multiple Releases of Same Resource or Handle
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:6ece0ac34989350e9be7613fc533767af9ad7bf9544bad6ad297dcece2b6ca64_amd64
Vendor Fix fix
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:82081eb65c0d359b5d4895e72ef21955a7703a533d2a39a74e0084d398807a45_arm64
Vendor Fix fix
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:ae120a374dbc2935cd270351ead5a944e84fb305c704df8f41d72e32d69fbd97_ppc64le
Vendor Fix fix
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:d548561809fc5d0423fa4dfde0a906b986170f16262c47077e1a6e6889c5d5a5_s390x
Vendor Fix fix
Workaround
Product Identifier Version Remediation
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:07a04832975f5740a8d36db33e304d34f4e38a870788de05112a5c31505d148e_amd64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:b5355c3c85d9e34f22a46bb3f190bd2bfcb4f27109858010c80539c6fbeccdbe_s390x
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:b906c8de5f631902847740e7ac105b74c80ab488868fde7d750dff5881ea8e5d_arm64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:ee2f7805d99ed025739bf2187649f0171c263baa0d844fe652d68b441d6dcd79_ppc64le
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-operator-bundle@sha256:4214978132ffd6f9d840e2be8df4e9b85cf13d2740ba4f82fbe72f3d93d6dee5_amd64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:0b237c4474bb9a64a70308f35a0645fecb20efa27d63e706b27ca091d255b311_s390x
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:2ed8b109c7ffb6821590ec0b554f894b7c714c1b9632be260818f7178daf7baa_arm64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:5e0f6c04a44a3050869c00524f214bfd72ca34aadbf71b80f0d12cc3022d4f2b_ppc64le
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:dbdf7d0d139bdd2661a486493805540cd6e9277aaadbde7a1414ccdc157a20e5_amd64
Workaround
Threats
Impact Important

A flaw was found in the HTTP/2 protocol implementation within the Go standard library (golang.org/x/net and net/http/internal/http2). A remote attacker can exploit this vulnerability by sending a specially crafted HTTP/2 SETTINGS frame with the SETTINGS_MAX_FRAME_SIZE parameter set to zero. This malicious frame causes the transport layer to enter an infinite loop of writing CONTINUATION frames, leading to resource exhaustion and a Denial of Service (DoS) condition.

CWE-606 - Unchecked Input for Loop Condition
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:6ece0ac34989350e9be7613fc533767af9ad7bf9544bad6ad297dcece2b6ca64_amd64
Vendor Fix fix
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:82081eb65c0d359b5d4895e72ef21955a7703a533d2a39a74e0084d398807a45_arm64
Vendor Fix fix
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:ae120a374dbc2935cd270351ead5a944e84fb305c704df8f41d72e32d69fbd97_ppc64le
Vendor Fix fix
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:d548561809fc5d0423fa4dfde0a906b986170f16262c47077e1a6e6889c5d5a5_s390x
Vendor Fix fix
Workaround
Product Identifier Version Remediation
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:07a04832975f5740a8d36db33e304d34f4e38a870788de05112a5c31505d148e_amd64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:b5355c3c85d9e34f22a46bb3f190bd2bfcb4f27109858010c80539c6fbeccdbe_s390x
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:b906c8de5f631902847740e7ac105b74c80ab488868fde7d750dff5881ea8e5d_arm64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:ee2f7805d99ed025739bf2187649f0171c263baa0d844fe652d68b441d6dcd79_ppc64le
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-operator-bundle@sha256:4214978132ffd6f9d840e2be8df4e9b85cf13d2740ba4f82fbe72f3d93d6dee5_amd64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:0b237c4474bb9a64a70308f35a0645fecb20efa27d63e706b27ca091d255b311_s390x
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:2ed8b109c7ffb6821590ec0b554f894b7c714c1b9632be260818f7178daf7baa_arm64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:5e0f6c04a44a3050869c00524f214bfd72ca34aadbf71b80f0d12cc3022d4f2b_ppc64le
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:dbdf7d0d139bdd2661a486493805540cd6e9277aaadbde7a1414ccdc157a20e5_amd64
Workaround
Threats
Impact Important

A flaw was found in the `net/mail` package of the Go programming language. An attacker could provide specially crafted inputs to the `ParseAddress`, `ParseAddressList`, or `ParseDate` functions. This could lead to excessive consumption of CPU and memory resources, resulting in a Denial of Service (DoS) for applications processing these inputs.

CWE-606 - Unchecked Input for Loop Condition
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:6ece0ac34989350e9be7613fc533767af9ad7bf9544bad6ad297dcece2b6ca64_amd64
Vendor Fix fix
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:82081eb65c0d359b5d4895e72ef21955a7703a533d2a39a74e0084d398807a45_arm64
Vendor Fix fix
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:ae120a374dbc2935cd270351ead5a944e84fb305c704df8f41d72e32d69fbd97_ppc64le
Vendor Fix fix
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:d548561809fc5d0423fa4dfde0a906b986170f16262c47077e1a6e6889c5d5a5_s390x
Vendor Fix fix
Workaround
Product Identifier Version Remediation
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:07a04832975f5740a8d36db33e304d34f4e38a870788de05112a5c31505d148e_amd64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:b5355c3c85d9e34f22a46bb3f190bd2bfcb4f27109858010c80539c6fbeccdbe_s390x
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:b906c8de5f631902847740e7ac105b74c80ab488868fde7d750dff5881ea8e5d_arm64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:ee2f7805d99ed025739bf2187649f0171c263baa0d844fe652d68b441d6dcd79_ppc64le
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-operator-bundle@sha256:4214978132ffd6f9d840e2be8df4e9b85cf13d2740ba4f82fbe72f3d93d6dee5_amd64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:0b237c4474bb9a64a70308f35a0645fecb20efa27d63e706b27ca091d255b311_s390x
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:2ed8b109c7ffb6821590ec0b554f894b7c714c1b9632be260818f7178daf7baa_arm64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:5e0f6c04a44a3050869c00524f214bfd72ca34aadbf71b80f0d12cc3022d4f2b_ppc64le
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:dbdf7d0d139bdd2661a486493805540cd6e9277aaadbde7a1414ccdc157a20e5_amd64
Workaround
Threats
Impact Important

A flaw was found in golang.org/x/net/idna. ToASCII and ToUnicode incorrectly accept Punycode-encoded labels that decode to an ASCII-only hostname (for example, xn--example-.com returns example.com instead of an error). Applications that validate the ASCII form then convert to Unicode may grant access to a restricted hostname the ASCII check would have rejected.

CWE-1289 - Improper Validation of Unsafe Equivalence in Input
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:6ece0ac34989350e9be7613fc533767af9ad7bf9544bad6ad297dcece2b6ca64_amd64
Vendor Fix fix
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:82081eb65c0d359b5d4895e72ef21955a7703a533d2a39a74e0084d398807a45_arm64
Vendor Fix fix
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:ae120a374dbc2935cd270351ead5a944e84fb305c704df8f41d72e32d69fbd97_ppc64le
Vendor Fix fix
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:d548561809fc5d0423fa4dfde0a906b986170f16262c47077e1a6e6889c5d5a5_s390x
Vendor Fix fix
Workaround
Product Identifier Version Remediation
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:07a04832975f5740a8d36db33e304d34f4e38a870788de05112a5c31505d148e_amd64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:b5355c3c85d9e34f22a46bb3f190bd2bfcb4f27109858010c80539c6fbeccdbe_s390x
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:b906c8de5f631902847740e7ac105b74c80ab488868fde7d750dff5881ea8e5d_arm64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:ee2f7805d99ed025739bf2187649f0171c263baa0d844fe652d68b441d6dcd79_ppc64le
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-operator-bundle@sha256:4214978132ffd6f9d840e2be8df4e9b85cf13d2740ba4f82fbe72f3d93d6dee5_amd64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:0b237c4474bb9a64a70308f35a0645fecb20efa27d63e706b27ca091d255b311_s390x
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:2ed8b109c7ffb6821590ec0b554f894b7c714c1b9632be260818f7178daf7baa_arm64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:5e0f6c04a44a3050869c00524f214bfd72ca34aadbf71b80f0d12cc3022d4f2b_ppc64le
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:dbdf7d0d139bdd2661a486493805540cd6e9277aaadbde7a1414ccdc157a20e5_amd64
Workaround
Threats
Impact Important

A flaw was found in the `net/mail` package within the Go standard library. A remote attacker could provide specially crafted, pathological email addresses. When these malformed email addresses are parsed by the `consumePhrase` function, it can lead to excessive resource consumption due to quadratic string concatenation, resulting in a Denial of Service (DoS) condition.

CWE-1046 - Creation of Immutable Text Using String Concatenation
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:6ece0ac34989350e9be7613fc533767af9ad7bf9544bad6ad297dcece2b6ca64_amd64
Vendor Fix fix
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:82081eb65c0d359b5d4895e72ef21955a7703a533d2a39a74e0084d398807a45_arm64
Vendor Fix fix
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:ae120a374dbc2935cd270351ead5a944e84fb305c704df8f41d72e32d69fbd97_ppc64le
Vendor Fix fix
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:d548561809fc5d0423fa4dfde0a906b986170f16262c47077e1a6e6889c5d5a5_s390x
Vendor Fix fix
Workaround
Product Identifier Version Remediation
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:07a04832975f5740a8d36db33e304d34f4e38a870788de05112a5c31505d148e_amd64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:b5355c3c85d9e34f22a46bb3f190bd2bfcb4f27109858010c80539c6fbeccdbe_s390x
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:b906c8de5f631902847740e7ac105b74c80ab488868fde7d750dff5881ea8e5d_arm64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:ee2f7805d99ed025739bf2187649f0171c263baa0d844fe652d68b441d6dcd79_ppc64le
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-operator-bundle@sha256:4214978132ffd6f9d840e2be8df4e9b85cf13d2740ba4f82fbe72f3d93d6dee5_amd64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:0b237c4474bb9a64a70308f35a0645fecb20efa27d63e706b27ca091d255b311_s390x
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:2ed8b109c7ffb6821590ec0b554f894b7c714c1b9632be260818f7178daf7baa_arm64
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:5e0f6c04a44a3050869c00524f214bfd72ca34aadbf71b80f0d12cc3022d4f2b_ppc64le
Workaround
Unresolved product id: Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:dbdf7d0d139bdd2661a486493805540cd6e9277aaadbde7a1414ccdc157a20e5_amd64
Workaround
Threats
Impact Important
References
URL Category
https://access.redhat.com/errata/RHSA-2026:54287 self
https://access.redhat.com/security/cve/CVE-2026-25681 external
https://access.redhat.com/security/cve/CVE-2026-27136 external
https://access.redhat.com/security/cve/CVE-2026-33811 external
https://access.redhat.com/security/cve/CVE-2026-33814 external
https://access.redhat.com/security/cve/CVE-2026-39820 external
https://access.redhat.com/security/cve/CVE-2026-39821 external
https://access.redhat.com/security/cve/CVE-2026-42499 external
https://access.redhat.com/security/updates/classi… external
https://security.access.redhat.com/data/csaf/v2/a… self
https://access.redhat.com/security/cve/CVE-2026-25681 self
https://bugzilla.redhat.com/show_bug.cgi?id=2480761 external
https://www.cve.org/CVERecord?id=CVE-2026-25681 external
https://nvd.nist.gov/vuln/detail/CVE-2026-25681 external
https://go.dev/cl/781703 external
https://go.dev/issue/79574 external
https://groups.google.com/g/golang-announce/c/iI-… external
https://pkg.go.dev/vuln/GO-2026-5029 external
https://access.redhat.com/security/cve/CVE-2026-27136 self
https://bugzilla.redhat.com/show_bug.cgi?id=2480757 external
https://www.cve.org/CVERecord?id=CVE-2026-27136 external
https://nvd.nist.gov/vuln/detail/CVE-2026-27136 external
https://go.dev/cl/781685 external
https://go.dev/issue/79575 external
https://pkg.go.dev/vuln/GO-2026-5030 external
https://access.redhat.com/security/cve/CVE-2026-33811 self
https://bugzilla.redhat.com/show_bug.cgi?id=2467822 external
https://www.cve.org/CVERecord?id=CVE-2026-33811 external
https://nvd.nist.gov/vuln/detail/CVE-2026-33811 external
https://go.dev/cl/767860 external
https://go.dev/issue/78803 external
https://groups.google.com/g/golang-announce/c/qcC… external
https://pkg.go.dev/vuln/GO-2026-4981 external
https://access.redhat.com/security/cve/CVE-2026-33814 self
https://bugzilla.redhat.com/show_bug.cgi?id=2467815 external
https://www.cve.org/CVERecord?id=CVE-2026-33814 external
https://nvd.nist.gov/vuln/detail/CVE-2026-33814 external
https://go.dev/cl/761581 external
https://go.dev/cl/761640 external
https://go.dev/issue/78476 external
https://pkg.go.dev/vuln/GO-2026-4918 external
https://access.redhat.com/security/cve/CVE-2026-39820 self
https://bugzilla.redhat.com/show_bug.cgi?id=2467820 external
https://www.cve.org/CVERecord?id=CVE-2026-39820 external
https://nvd.nist.gov/vuln/detail/CVE-2026-39820 external
https://go.dev/cl/759940 external
https://go.dev/issue/78566 external
https://pkg.go.dev/vuln/GO-2026-4986 external
https://access.redhat.com/security/cve/CVE-2026-39821 self
https://bugzilla.redhat.com/show_bug.cgi?id=2480756 external
https://www.cve.org/CVERecord?id=CVE-2026-39821 external
https://nvd.nist.gov/vuln/detail/CVE-2026-39821 external
https://go.dev/cl/767220 external
https://go.dev/issue/78760 external
https://pkg.go.dev/vuln/GO-2026-5026 external
https://access.redhat.com/security/cve/CVE-2026-42499 self
https://bugzilla.redhat.com/show_bug.cgi?id=2467809 external
https://www.cve.org/CVERecord?id=CVE-2026-42499 external
https://nvd.nist.gov/vuln/detail/CVE-2026-42499 external
https://go.dev/cl/771520 external
https://go.dev/issue/78987 external
https://pkg.go.dev/vuln/GO-2026-4977 external

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            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
            "version": "3.1"
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    },
    {
      "cve": "CVE-2026-27136",
      "cwe": {
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        "name": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)"
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        {
          "category": "description",
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          "title": "Vulnerability description"
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          "text": "golang.org/x/net/html: golang: golang.org/x/net/html: Cross-Site Scripting via HTML parsing bypass",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This vulnerability in `golang.org/x/net/html` is rated as Important. It allows for Cross-Site Scripting (XSS) attacks by enabling an attacker to bypass HTML sanitization mechanisms when arbitrary HTML is parsed and rendered. This can lead to information disclosure or arbitrary code execution in affected applications. Exploitation typically requires user interaction, where a user processes specially crafted malicious HTML content.",
          "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"
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          "category": "impact",
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      "title": "golang.org/x/net/html: golang: golang.org/x/net/html: Cross-Site Scripting via HTML parsing bypass"
    },
    {
      "cve": "CVE-2026-33811",
      "cwe": {
        "id": "CWE-1341",
        "name": "Multiple Releases of Same Resource or Handle"
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          "category": "description",
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          "title": "Vulnerability description"
        },
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          "category": "summary",
          "text": "net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This is an Important denial of service vulnerability in the Go `net` package, affecting applications configured to use the `cgo` DNS resolver. A remote attacker could trigger a double-free memory error by providing a very long CNAME response, leading to a crash of the vulnerable application and impacting service 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"
        }
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    },
    {
      "cve": "CVE-2026-33814",
      "cwe": {
        "id": "CWE-606",
        "name": "Unchecked Input for Loop Condition"
      },
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        {
          "category": "description",
          "text": "A flaw was found in the HTTP/2 protocol implementation within the Go standard library (golang.org/x/net and net/http/internal/http2). A remote attacker can exploit this vulnerability by sending a specially crafted HTTP/2 SETTINGS frame with the SETTINGS_MAX_FRAME_SIZE parameter set to zero. This malicious frame causes the transport layer to enter an infinite loop of writing CONTINUATION frames, leading to resource exhaustion and a Denial of Service (DoS) condition.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "net/http/internal/http2: golang: golang.org/x/net: Go HTTP/2: Denial of Service via malformed SETTINGS_MAX_FRAME_SIZE frame",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This Important denial of service flaw in the Go HTTP/2 protocol implementation allows a remote, unauthenticated attacker to exhaust system resources. By sending a specially crafted HTTP/2 SETTINGS frame with a zero-value SETTINGS_MAX_FRAME_SIZE, the vulnerable Go library enters an infinite loop, impacting the availability of services utilizing HTTP/2.",
          "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"
        }
      ],
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          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33814"
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          "category": "external",
          "summary": "https://go.dev/cl/761581",
          "url": "https://go.dev/cl/761581"
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          "summary": "https://go.dev/cl/761640",
          "url": "https://go.dev/cl/761640"
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          "category": "external",
          "summary": "https://go.dev/issue/78476",
          "url": "https://go.dev/issue/78476"
        },
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          "category": "external",
          "summary": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M",
          "url": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M"
        },
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          "category": "external",
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          "url": "https://pkg.go.dev/vuln/GO-2026-4918"
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            "attackVector": "NETWORK",
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            "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"
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          "text": "A flaw was found in the `net/mail` package of the Go programming language. An attacker could provide specially crafted inputs to the `ParseAddress`, `ParseAddressList`, or `ParseDate` functions. This could lead to excessive consumption of CPU and memory resources, resulting in a Denial of Service (DoS) for applications processing these inputs.",
          "title": "Vulnerability description"
        },
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          "category": "summary",
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          "title": "Vulnerability summary"
        },
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          "category": "other",
          "text": "This is an Important denial of service vulnerability in the Go `net/mail` package. Applications processing untrusted email inputs via `ParseAddress`, `ParseAddressList`, or `ParseDate` functions are susceptible to excessive resource consumption, which can lead to service unavailability.",
          "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"
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          "url": "https://go.dev/issue/78566"
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          "url": "https://pkg.go.dev/vuln/GO-2026-4986"
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            "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"
          },
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          "details": "Important"
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      "title": "net/mail: golang: Go net/mail: Denial of Service via crafted email inputs"
    },
    {
      "cve": "CVE-2026-39821",
      "cwe": {
        "id": "CWE-1289",
        "name": "Improper Validation of Unsafe Equivalence in Input"
      },
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          "system_name": "Red Hat Bugzilla ID",
          "text": "2480756"
        }
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        {
          "category": "description",
          "text": "A flaw was found in golang.org/x/net/idna. ToASCII and ToUnicode incorrectly accept Punycode-encoded labels that decode to an ASCII-only hostname (for example, xn--example-.com returns example.com instead of an error). Applications that validate the ASCII form then convert to Unicode may grant access to a restricted hostname the ASCII check would have rejected.",
          "title": "Vulnerability description"
        },
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          "category": "summary",
          "text": "golang.org/x/net/idna: golang: net/http: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "golang.org/x/net/idna is vulnerable to privilege escalation through incorrect Punycode label handling in ToASCII and ToUnicode. An attacker who can supply a Punycode hostname that passes an ASCII-only authorization check may have it normalized to a restricted ASCII name the application intended to block. Red Hat exposure is broad across products shipping the Go toolchain or bundling golang.org/x/net, including RHEL and RHEL-AI golang RPMs, hummingbird Go runtimes, OpenShift and ODF container builds, and Ceph/OpenShift components compiled against affected x/net versions.",
          "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"
        }
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          "title": "Vulnerability description"
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          "title": "Vulnerability summary"
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          "category": "other",
          "text": "This is an Important denial of service vulnerability in the `net/mail` package of the Go standard library. A remote attacker can exploit this flaw by sending specially crafted email addresses, leading to excessive resource consumption and a denial of service in Go applications that parse email addresses using the affected library.",
          "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"
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            "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": [
            "Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:07a04832975f5740a8d36db33e304d34f4e38a870788de05112a5c31505d148e_amd64",
            "Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:b5355c3c85d9e34f22a46bb3f190bd2bfcb4f27109858010c80539c6fbeccdbe_s390x",
            "Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:b906c8de5f631902847740e7ac105b74c80ab488868fde7d750dff5881ea8e5d_arm64",
            "Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-must-gather-rhel9@sha256:ee2f7805d99ed025739bf2187649f0171c263baa0d844fe652d68b441d6dcd79_ppc64le",
            "Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-operator-bundle@sha256:4214978132ffd6f9d840e2be8df4e9b85cf13d2740ba4f82fbe72f3d93d6dee5_amd64",
            "Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:6ece0ac34989350e9be7613fc533767af9ad7bf9544bad6ad297dcece2b6ca64_amd64",
            "Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:82081eb65c0d359b5d4895e72ef21955a7703a533d2a39a74e0084d398807a45_arm64",
            "Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:ae120a374dbc2935cd270351ead5a944e84fb305c704df8f41d72e32d69fbd97_ppc64le",
            "Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-healthcheck-rhel9-operator@sha256:d548561809fc5d0423fa4dfde0a906b986170f16262c47077e1a6e6889c5d5a5_s390x",
            "Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:0b237c4474bb9a64a70308f35a0645fecb20efa27d63e706b27ca091d255b311_s390x",
            "Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:2ed8b109c7ffb6821590ec0b554f894b7c714c1b9632be260818f7178daf7baa_arm64",
            "Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:5e0f6c04a44a3050869c00524f214bfd72ca34aadbf71b80f0d12cc3022d4f2b_ppc64le",
            "Red Hat OpenShift Workload Availability 0.12:registry.redhat.io/workload-availability/node-remediation-console-rhel9@sha256:dbdf7d0d139bdd2661a486493805540cd6e9277aaadbde7a1414ccdc157a20e5_amd64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "net/mail: golang: net/mail: Denial of Service via pathological email address parsing"
    }
  ]
}



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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.

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Detection rules are retrieved from Rulezet.

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