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CVE-2026-54765

Traefik is an open source HTTP reverse proxy and load balancer. From v3.7.0 prior to v3.7.6, Traefik's Kubernetes Gateway API provider may resolve two accepted HTTPRoutes that target the same backend Service:port but configure different backendRef filters to the same child service and apply only one route's filter set to all requests reaching that backend. In Gateway deployments where backendRef filters set security-sensitive headers, such as tenant identity, authorization context, or values the
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ae3a78310cd0aae624f5fd1e5e362505dcde394989326df37c7eb18e270dd6ce
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-863","description":"CWE-863: Incorrect Authorization","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6b201dc153a7d0c1943896943608144f517f88aab331bc256efff9973273d1df · sha256:ead93fbad8289de8… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-284","description":"CWE-284: Improper Access Control","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6b201dc153a7d0c1943896943608144f517f88aab331bc256efff9973273d1df · sha256:ead93fbad8289de8… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"traefik","vendor":"traefik","versions":[{"status":"affected","version":">= 3.7.0, < 3.7.6"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6b201dc153a7d0c1943896943608144f517f88aab331bc256efff9973273d1df · sha256:ead93fbad8289de8… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.3,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"HIGH","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:H/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:6b201dc153a7d0c1943896943608144f517f88aab331bc256efff9973273d1df · sha256:ead93fbad8289de8… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-863","description":"CWE-863: Incorrect Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6b201dc153a7d0c1943896943608144f517f88aab331bc256efff9973273d1df · sha256:ead93fbad8289de8… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-284","description":"CWE-284: Improper Access Control","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6b201dc153a7d0c1943896943608144f517f88aab331bc256efff9973273d1df · sha256:ead93fbad8289de8… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"name":"https://github.com/traefik/traefik/commit/8aada7a7d52e4588a75386d8b86d270f6fe8d549","tags":["x_refsource_MISC"],"url":"https://github.com/traefik/traefik/commit/8aada7a7d52e4588a75386d8b86d270f6fe8d549"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6b201dc153a7d0c1943896943608144f517f88aab331bc256efff9973273d1df · sha256:ead93fbad8289de8… · /containers/cna/references/2
{"name":"https://github.com/traefik/traefik/pull/13367","tags":["x_refsource_MISC"],"url":"https://github.com/traefik/traefik/pull/13367"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6b201dc153a7d0c1943896943608144f517f88aab331bc256efff9973273d1df · sha256:ead93fbad8289de8… · /containers/cna/references/1
{"name":"https://github.com/traefik/traefik/releases/tag/v3.7.6","tags":["x_refsource_MISC"],"url":"https://github.com/traefik/traefik/releases/tag/v3.7.6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6b201dc153a7d0c1943896943608144f517f88aab331bc256efff9973273d1df · sha256:ead93fbad8289de8… · /containers/cna/references/3
{"name":"https://github.com/traefik/traefik/security/advisories/GHSA-6p8f-p8j2-rqmv","tags":["x_refsource_CONFIRM"],"url":"https://github.com/traefik/traefik/security/advisories/GHSA-6p8f-p8j2-rqmv"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6b201dc153a7d0c1943896943608144f517f88aab331bc256efff9973273d1df · sha256:ead93fbad8289de8… · /containers/cna/references/0

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.

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