CVE Explorer
CVE-2026-65601
Traefik versions 3.7.0 through 3.7.6 contain a namespace confusion vulnerability in the Kubernetes Gateway API provider. When resolving HTTPRoute.spec.rules[].backendRefs[].filters[].extensionRef, Traefik used the backend Service namespace instead of the HTTPRoute namespace. A low-privileged route author holding a ReferenceGrant for a cross-namespace Service could therefore bind a Traefik Middleware from the backend namespace without a separate grant for that middleware, potentially injecting tr
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","packageURL":"pkg:golang/Traefik","product":"traefik","vendor":"traefik","versions":[{"lessThan":"3.7.7","status":"affected","version":"3.7.0","versionType":"semver"},{"status":"unaffected","version":"3.7.7","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:b391054a09ab6447eb357f9d42aa9502bd903d44bf7bbd6646b72fe289ab6e22 · sha256:0039851e869156e0… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:b391054a09ab6447eb357f9d42aa9502bd903d44bf7bbd6646b72fe289ab6e22 · sha256:0039851e869156e0… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-863","description":"Incorrect Authorization","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:b391054a09ab6447eb357f9d42aa9502bd903d44bf7bbd6646b72fe289ab6e22 · sha256:0039851e869156e0… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"name":"Patch Commit","tags":["patch"],"url":"https://github.com/traefik/traefik/commit/26c96a3935cafb473f4a5bae1886560d9aa4e4f0"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:b391054a09ab6447eb357f9d42aa9502bd903d44bf7bbd6646b72fe289ab6e22 · sha256:0039851e869156e0… · /containers/cna/references/1
{"name":"GitHub Security Advisory (GHSA-qq9q-x9w4-chhj)","tags":["vendor-advisory"],"url":"https://github.com/traefik/traefik/security/advisories/GHSA-qq9q-x9w4-chhj"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:b391054a09ab6447eb357f9d42aa9502bd903d44bf7bbd6646b72fe289ab6e22 · sha256:0039851e869156e0… · /containers/cna/references/0
{"name":"VulnCheck Advisory: Traefik before 3.7.7 Namespace Confusion via HTTPRoute ExtensionRef","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/traefik-before-namespace-confusion-via-httproute-extensionref"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:b391054a09ab6447eb357f9d42aa9502bd903d44bf7bbd6646b72fe289ab6e22 · sha256:0039851e869156e0… · /containers/cna/references/2
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.