{"id":"CVE-2026-114638","title":"Traefik v3.7.0 before v3.7.14 Client CA Mix-up via auth-tls-secret Name Collision","summary":"Traefik v3.7.0 before v3.7.14 contains an improper authentication vulnerability in the Kubernetes Ingress NGINX provider that merges client CAs when auth-tls-secret names collide after dot-to-dash normalization. Attackers holding certifi…","severity":"high","cvss":8.7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","cvssSource":"cna","cwe":["CWE-287"],"vendor":"traefik","product":"traefik","affected":["traefik >= 3.7.0 < 3.7.14"],"published":"2026-10-22","updated":"2026-10-22","sourceUpdated":"2026-10-22T01:43:38.571Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-114638","references":[{"url":"https://github.com/traefik/traefik/security/advisories/GHSA-rv2h-qh7j-xrjw","label":"GitHub Security Advisory (GHSA-rv2h-qh7j-xrjw)"},{"url":"https://www.vulncheck.com/advisories/traefik-3.7.0-before-3.7.14-client-ca-mix-up-via-auth-tls-secret-name-collision","label":"VulnCheck Advisory: Traefik v3.7.0 before v3.7.14 Client CA Mix-up via auth-tls-secret Name Collision"}],"tags":["cve.org"],"ingestedAt":"2026-10-22T02:23:25.184Z","slug":"CVE-2026-114638","body":"## Overview\n\nTraefik v3.7.0 before v3.7.14 contains an improper authentication vulnerability in the Kubernetes Ingress NGINX provider that merges client CAs when auth-tls-secret names collide after dot-to-dash normalization. Attackers holding certificates from another host's CA can access a host requiring its own client CA, while that host's legitimate clients are refused.\n\n## Affected\n\n- `traefik >= 3.7.0 < 3.7.14`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":47.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}