{"id":"CVE-2026-114640","aliases":[],"title":"Traefik v3.7.0 before v3.7.14 mTLS Header Spoofing via Ingress-NGINX HTTP Router","titleSource":"VulnCheck","descriptionSource":"VulnCheck","products":[{"vendor":"traefik","name":"traefik","platforms":[],"versions":[{"version":"3.7.0","status":"affected","lessThan":"3.7.14","versionType":"semver"},{"version":"3.7.14","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected","source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-114640"}],"remediation":[],"description":"Traefik from v3.7.0 before v3.7.14 contains an authentication bypass vulnerability in its Kubernetes Ingress-NGINX provider that forwards client-supplied Ssl-Client-* headers on the plaintext HTTP router. When ssl-redirect is disabled alongside auth-tls-pass-certificate-to-upstream, unauthenticated attackers can send Ssl-Client-Verify: SUCCESS with a chosen certificate subject and issuer to impersonate mTLS identities.","severity":"high","score":7,"published":"2026-10-22T01:43:39.899Z","modified":"2026-10-28T02:14:25.018Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://github.com/traefik/traefik/security/advisories/GHSA-mwrr-6hp4-pxr6","https://www.vulncheck.com/advisories/traefik-3.7.0-before-3.7.14-mtls-header-spoofing-via-ingress-nginx-http-router"],"sources":[{"name":"CVE","id":"CVE-2026-114640","modified":"2026-10-28T02:14:25.018Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-114640"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N","score":7},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","score":8.7}],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T14:30:35.755Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}