{"id":"CVE-2026-114638","summary":"Traefik v3.7.0 before v3.7.14 Client CA Mix-up via auth-tls-secret Name Collision","details":"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 certificates from another host's CA can access a host requiring its own client CA, while that host's legitimate clients are refused.","aliases":["GHSA-rv2h-qh7j-xrjw"],"modified":"2026-10-22T10:46:05.551470222Z","published":"2026-10-22T01:43:38.571Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-287"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/114xxx/CVE-2026-114638.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/114xxx/CVE-2026-114638.json"},{"type":"ADVISORY","url":"https://github.com/traefik/traefik/security/advisories/GHSA-rv2h-qh7j-xrjw"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-114638"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/traefik-3.7.0-before-3.7.14-client-ca-mix-up-via-auth-tls-secret-name-collision"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/traefik/traefik","events":[{"introduced":"04aa6bb4f9776f2ba87e5cd181d250e3610e6419"},{"fixed":"3bd7aa32e1b6c41166575529a10fb2346d9eaa2e"}],"database_specific":{"extracted_events":[{"source":"AFFECTED_FIELD","strategy":"StandardRange","range":[{"introduced":"3.7.0"},{"fixed":"3.7.14"}]}]}}],"versions":["v3.7.13","v3.7.12","v3.7.11","v3.7.10","v3.7.9","v3.7.8","v3.7.7","v3.7.6","v3.7.5","v3.7.4","v3.7.3","v3.7.2","v3.7.1","v3.7.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-114638.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}