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Vulnerability from cleanstart
Published
2026-05-18 13:19
Modified
2026-05-13 10:26
Summary
Security fixes for CVE-2026-29181, CVE-2026-33186, CVE-2026-33811, CVE-2026-33814, CVE-2026-35469, CVE-2026-39820, CVE-2026-39823, CVE-2026-39825, CVE-2026-39826, CVE-2026-39836, CVE-2026-42499, ghsa-hr2v-4r36-88hr, ghsa-p77j-4mvh-x3m3, ghsa-pc3f-x583-g7j2 applied in versions: 26.1.4-r0, 26.1.4-r1
Details
Multiple security vulnerabilities affect the linkerd2 package. These issues are resolved in later releases. See references for individual vulnerability details.
References
{
"affected": [
{
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"ecosystem": "CleanStart",
"name": "linkerd2"
},
"ranges": [
{
"events": [
{
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},
{
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}
],
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}
]
}
],
"credits": [],
"database_specific": {},
"details": "Multiple security vulnerabilities affect the linkerd2 package. These issues are resolved in later releases. See references for individual vulnerability details.",
"id": "CLEANSTART-2026-OX51942",
"modified": "2026-05-13T10:26:09Z",
"published": "2026-05-18T13:19:45.115559Z",
"references": [
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},
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"url": "https://osv.dev/vulnerability/CVE-2026-33186"
},
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"url": "https://osv.dev/vulnerability/CVE-2026-33811"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-33814"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-35469"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-39820"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-39823"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-39825"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-39826"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-39836"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-42499"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/ghsa-hr2v-4r36-88hr"
},
{
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},
{
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{
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-29181"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33186"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33811"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33814"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35469"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39820"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39823"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39825"
},
{
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39826"
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"CVE-2026-39823",
"CVE-2026-39825",
"CVE-2026-39826",
"CVE-2026-39836",
"CVE-2026-42499",
"ghsa-hr2v-4r36-88hr",
"ghsa-p77j-4mvh-x3m3",
"ghsa-pc3f-x583-g7j2"
]
}
CVE-2026-29181 (GCVE-0-2026-29181)
Vulnerability from cvelistv5 – Published: 2026-04-07 20:29 – Updated: 2026-04-08 15:37
VLAI?
EPSS
Title
OpenTelemetry-Go multi-value `baggage` header extraction causes excessive allocations (remote dos amplification)
Summary
OpenTelemetry-Go is the Go implementation of OpenTelemetry. From 1.36.0 to 1.40.0, multi-value baggage: header extraction parses each header field-value independently and aggregates members across values. This allows an attacker to amplify cpu and allocations by sending many baggage: header lines, even when each individual value is within the 8192-byte per-value parse limit. This vulnerability is fixed in 1.41.0.
Severity ?
7.5 (High)
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/open-telemetry/opentelemetry-g… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| open-telemetry | opentelemetry-go |
Affected:
>= 1.36.0, < 1.41.0
|
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CVE-2026-33186 (GCVE-0-2026-33186)
Vulnerability from cvelistv5 – Published: 2026-03-20 22:23 – Updated: 2026-03-24 18:09
VLAI?
EPSS
Title
gRPC-Go has an authorization bypass via missing leading slash in :path
Summary
gRPC-Go is the Go language implementation of gRPC. Versions prior to 1.79.3 have an authorization bypass resulting from improper input validation of the HTTP/2 `:path` pseudo-header. The gRPC-Go server was too lenient in its routing logic, accepting requests where the `:path` omitted the mandatory leading slash (e.g., `Service/Method` instead of `/Service/Method`). While the server successfully routed these requests to the correct handler, authorization interceptors (including the official `grpc/authz` package) evaluated the raw, non-canonical path string. Consequently, "deny" rules defined using canonical paths (starting with `/`) failed to match the incoming request, allowing it to bypass the policy if a fallback "allow" rule was present. This affects gRPC-Go servers that use path-based authorization interceptors, such as the official RBAC implementation in `google.golang.org/grpc/authz` or custom interceptors relying on `info.FullMethod` or `grpc.Method(ctx)`; AND that have a security policy contains specific "deny" rules for canonical paths but allows other requests by default (a fallback "allow" rule). The vulnerability is exploitable by an attacker who can send raw HTTP/2 frames with malformed `:path` headers directly to the gRPC server. The fix in version 1.79.3 ensures that any request with a `:path` that does not start with a leading slash is immediately rejected with a `codes.Unimplemented` error, preventing it from reaching authorization interceptors or handlers with a non-canonical path string. While upgrading is the most secure and recommended path, users can mitigate the vulnerability using one of the following methods: Use a validating interceptor (recommended mitigation); infrastructure-level normalization; and/or policy hardening.
Severity ?
9.1 (Critical)
CWE
- CWE-285 - Improper Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/grpc/grpc-go/security/advisori… | x_refsource_CONFIRM |
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CVE-2026-33811 (GCVE-0-2026-33811)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 14:25
VLAI?
EPSS
Title
Crash when handling long CNAME response in net
Summary
When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.
Severity ?
7.5 (High)
CWE
- CWE-415 - Double Free
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | net |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
Credits
hamayanhamayan
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CVE-2026-33814 (GCVE-0-2026-33814)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 18:01
VLAI?
EPSS
Title
Infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE in net/http/internal/http2 in golang.org/x/net
Summary
When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS_MAX_FRAME_SIZE with a value of 0.
Severity ?
7.5 (High)
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/net | golang.org/x/net/http2 |
Affected:
0 , < 0.53.0
(semver)
|
|
| Go standard library | net/http |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
Credits
Marwan Atia (marwansamir688@gmail.com)
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{
"name": "clientConnPool.GetClientConn"
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"name": "noDialClientConnPool.GetClientConn"
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{
"name": "noDialH2RoundTripper.NewClientConn"
},
{
"name": "noDialH2RoundTripper.RoundTrip"
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{
"name": "unencryptedTransport.RoundTrip"
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],
"vendor": "golang.org/x/net",
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"name": "Client.Do"
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{
"name": "Client.Get"
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{
"name": "Client.Head"
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{
"name": "Client.Post"
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{
"name": "Client.PostForm"
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CVE-2026-35469 (GCVE-0-2026-35469)
Vulnerability from cvelistv5 – Published: 2026-04-16 21:19 – Updated: 2026-04-17 12:37
VLAI?
EPSS
Title
SpdyStream: DOS on CRI
Summary
spdystream is a Go library for multiplexing streams over SPDY connections. In versions 0.5.0 and below, the SPDY/3 frame parser does not validate attacker-controlled counts and lengths before allocating memory. Three allocation paths are affected: the SETTINGS frame entry count, the header count in parseHeaderValueBlock, and individual header field sizes — all read as 32-bit integers and used directly as allocation sizes with no bounds checking. Because SPDY header blocks are zlib-compressed, a small on-the-wire payload can decompress into large attacker-controlled values. A remote peer that can send SPDY frames to a service using spdystream can exhaust process memory and cause an out-of-memory crash with a single crafted control frame. This issue has been fixed in version 0.5.1.
Severity ?
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/moby/spdystream/security/advis… | x_refsource_CONFIRM |
| https://github.com/moby/spdystream/releases/tag/v0.5.1 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| moby | spdystream |
Affected:
< 0.5.1
|
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CVE-2026-39820 (GCVE-0-2026-39820)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 14:27
VLAI?
EPSS
Title
Quadratic string concatentation in consumeComment in net/mail
Summary
Well-crafted inputs reaching ParseAddress, ParseAddressList, and ParseDate were able to trigger excessive CPU exhaustion and memory allocations.
Severity ?
7.5 (High)
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | net/mail |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
Credits
thatnealpatel
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CVE-2026-39823 (GCVE-0-2026-39823)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 14:05
VLAI?
EPSS
Title
Bypass of meta content URL escaping causes XSS in html/template
Summary
CVE-2026-27142 fixed a vulnerability in which URLs were not correctly escaped inside of a <meta> tag's <content> attribute. If the URL content were to insert ASCII whitespaces around the '=' rune inside of the <content> attribute, the escaper would fail to similarly escape it, leading to XSS.
Severity ?
6.1 (Medium)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | html/template |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
Credits
Samy Ghannad
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CVE-2026-39825 (GCVE-0-2026-39825)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 21:30
VLAI?
EPSS
Title
ReverseProxy forwards queries with more than urlmaxqueryparams parameters in net/http/httputil
Summary
ReverseProxy can forward queries containing parameters not visible to Rewrite functions. When used with a Rewrite function, or a Director function which parses query parameters, ReverseProxy sanitizes the forwarded request to remove query parameters which are not parsed by url.ParseQuery. ReverseProxy does not take ParseQuery's limit on the total number of query parameters (controlled by GODEBUG=urlmaxqueryparams=N) into account. This can permit ReverseProxy to forward a request containing a query parameter that is not visible to the Rewrite function. For example, the query "a1=x&a2=x&...&a10000=x&hidden=y" can forward the parameter "hidden=y" while hiding it from the proxy's Rewrite function.
Severity ?
5.3 (Medium)
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | net/http/httputil |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
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},
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"url": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-4976"
}
],
"title": "ReverseProxy forwards queries with more than urlmaxqueryparams parameters in net/http/httputil"
}
},
"cveMetadata": {
"assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"assignerShortName": "Go",
"cveId": "CVE-2026-39825",
"datePublished": "2026-05-07T19:41:18.453Z",
"dateReserved": "2026-04-07T18:13:03.527Z",
"dateUpdated": "2026-05-08T21:30:08.872Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-39826 (GCVE-0-2026-39826)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 14:05
VLAI?
EPSS
Title
Escaper bypass leads to XSS in html/template
Summary
If a trusted template author were to write a <script> tag containing an empty 'type' attribute or a 'type' attribute with an ASCII whitespace, the execution of the template would incorrectly escape any data passed into the <script> block.
Severity ?
6.1 (Medium)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | html/template |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
Credits
Mundur (https://github.com/M0nd0R)
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.1,
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"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
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"version": "3.1"
}
},
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"other": {
"content": {
"id": "CVE-2026-39826",
"options": [
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "html/template",
"product": "html/template",
"programRoutines": [
{
"name": "isJSType"
},
{
"name": "Template.Execute"
},
{
"name": "Template.ExecuteTemplate"
}
],
"vendor": "Go standard library",
"versions": [
{
"lessThan": "1.25.10",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "1.26.3",
"status": "affected",
"version": "1.26.0-0",
"versionType": "semver"
}
]
}
],
"credits": [
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"lang": "en",
"value": "Mundur (https://github.com/M0nd0R)"
}
],
"descriptions": [
{
"lang": "en",
"value": "If a trusted template author were to write a \u003cscript\u003e tag containing an empty \u0027type\u0027 attribute or a \u0027type\u0027 attribute with an ASCII whitespace, the execution of the template would incorrectly escape any data passed into the \u003cscript\u003e block."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
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"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
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"references": [
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"url": "https://go.dev/issue/78981"
},
{
"url": "https://go.dev/cl/771180"
},
{
"url": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-4980"
}
],
"title": "Escaper bypass leads to XSS in html/template"
}
},
"cveMetadata": {
"assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"assignerShortName": "Go",
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"dateReserved": "2026-04-07T18:13:03.528Z",
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"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-39836 (GCVE-0-2026-39836)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 21:30
VLAI?
EPSS
Title
Panic in Dial and LookupPort when handling NUL byte on Windows in net
Summary
The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0).
Severity ?
7.5 (High)
CWE
- CWE-248 - Uncaught Exception
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | net |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
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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"
}
},
{
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"content": {
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},
{
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},
{
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}
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"timestamp": "2026-05-08T16:36:25.079035Z",
"version": "2.0.3"
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"providerMetadata": {
"dateUpdated": "2026-05-08T21:30:15.127Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "net",
"product": "net",
"programRoutines": [
{
"name": "Resolver.lookupPort"
},
{
"name": "Resolver.lookupAddr"
},
{
"name": "Resolver.lookupTXT"
},
{
"name": "Resolver.lookupNS"
},
{
"name": "Resolver.lookupMX"
},
{
"name": "Resolver.lookupSRV"
},
{
"name": "Dial"
},
{
"name": "DialTimeout"
},
{
"name": "Dialer.Dial"
},
{
"name": "Dialer.DialContext"
},
{
"name": "Listen"
},
{
"name": "ListenConfig.Listen"
},
{
"name": "ListenConfig.ListenPacket"
},
{
"name": "ListenPacket"
},
{
"name": "LookupAddr"
},
{
"name": "LookupCNAME"
},
{
"name": "LookupHost"
},
{
"name": "LookupIP"
},
{
"name": "LookupMX"
},
{
"name": "LookupNS"
},
{
"name": "LookupPort"
},
{
"name": "LookupSRV"
},
{
"name": "LookupTXT"
},
{
"name": "ResolveIPAddr"
},
{
"name": "ResolveTCPAddr"
},
{
"name": "ResolveUDPAddr"
},
{
"name": "Resolver.LookupAddr"
},
{
"name": "Resolver.LookupCNAME"
},
{
"name": "Resolver.LookupHost"
},
{
"name": "Resolver.LookupIP"
},
{
"name": "Resolver.LookupIPAddr"
},
{
"name": "Resolver.LookupMX"
},
{
"name": "Resolver.LookupNS"
},
{
"name": "Resolver.LookupNetIP"
},
{
"name": "Resolver.LookupPort"
},
{
"name": "Resolver.LookupSRV"
},
{
"name": "Resolver.LookupTXT"
}
],
"vendor": "Go standard library",
"versions": [
{
"lessThan": "1.25.10",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "1.26.3",
"status": "affected",
"version": "1.26.0-0",
"versionType": "semver"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0)."
}
],
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{
"descriptions": [
{
"description": "CWE-248: Uncaught Exception",
"lang": "en"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-07T19:41:18.300Z",
"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
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},
"references": [
{
"url": "https://go.dev/issue/79006"
},
{
"url": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M"
},
{
"url": "https://go.dev/cl/775320"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-4971"
}
],
"title": "Panic in Dial and LookupPort when handling NUL byte on Windows in net"
}
},
"cveMetadata": {
"assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
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"datePublished": "2026-05-07T19:41:18.300Z",
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"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Loading…
Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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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.
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