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CVE-2026-54762

Traefik is an HTTP reverse proxy and load balancer. From 3.7.0-ea.1 until 3.7.5, there is a medium severity vulnerability in Traefik's Kubernetes Ingress NGINX provider that causes affected routes to fail open. When an Ingress explicitly enables BasicAuth or DigestAuth through the supported nginx.ingress.kubernetes.io/auth-type and auth-secret annotations, but the referenced auth Secret cannot be resolved or parsed, Traefik logs the resolution error, skips installing the authentication middlewar
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ce50e58c07b73a37116ff1778d3183423c2c4c123d53a774f10e4caae5e29f99
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-636","description":"CWE-636: Not Failing Securely ('Failing Open')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d89c6a91b871a36b666fb4e62d4ff6823c01c219018d2c3f80ff787bf0bae575 · sha256:29c0408785cd96dc… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-693","description":"CWE-693: Protection Mechanism Failure","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d89c6a91b871a36b666fb4e62d4ff6823c01c219018d2c3f80ff787bf0bae575 · sha256:29c0408785cd96dc… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"traefik","vendor":"traefik","versions":[{"status":"affected","version":">= 3.7.0-ea.1, < 3.7.5"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d89c6a91b871a36b666fb4e62d4ff6823c01c219018d2c3f80ff787bf0bae575 · sha256:29c0408785cd96dc… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":5.9,"baseSeverity":"MEDIUM","privilegesRequired":"HIGH","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/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:d89c6a91b871a36b666fb4e62d4ff6823c01c219018d2c3f80ff787bf0bae575 · sha256:29c0408785cd96dc… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-636","description":"CWE-636: Not Failing Securely ('Failing Open')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d89c6a91b871a36b666fb4e62d4ff6823c01c219018d2c3f80ff787bf0bae575 · sha256:29c0408785cd96dc… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-693","description":"CWE-693: Protection Mechanism Failure","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d89c6a91b871a36b666fb4e62d4ff6823c01c219018d2c3f80ff787bf0bae575 · sha256:29c0408785cd96dc… · /containers/cna/problemTypes/1/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/traefik/traefik/releases/tag/v3.7.5","tags":["x_refsource_MISC"],"url":"https://github.com/traefik/traefik/releases/tag/v3.7.5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d89c6a91b871a36b666fb4e62d4ff6823c01c219018d2c3f80ff787bf0bae575 · sha256:29c0408785cd96dc… · /containers/cna/references/1
{"name":"https://github.com/traefik/traefik/security/advisories/GHSA-4mr2-fg2p-w63c","tags":["x_refsource_CONFIRM"],"url":"https://github.com/traefik/traefik/security/advisories/GHSA-4mr2-fg2p-w63c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d89c6a91b871a36b666fb4e62d4ff6823c01c219018d2c3f80ff787bf0bae575 · sha256:29c0408785cd96dc… · /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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