{"id":"CVE-2026-114637","aliases":["GHSA-53qr-784g-cj35"],"url":"https://o3.security/vulnerability/CVE-2026-114637","summary":"Traefik v3.2.0 before v3.7.14 FastProxy NTLM/Negotiate Connection Pool Identity Leak","details":"Traefik from v3.2.0 before v3.7.14 contains an authentication bypass vulnerability in the experimental FastProxy connection pool, which fails to pin NTLM/Negotiate-authenticated backend connections to their frontend connection. Unauthenticated clients can be handed a pooled keep-alive backend connection where a victim completed an NTLM or Negotiate handshake, letting them read victim data and act as that victim.","published":"2026-10-22T01:43:37.851Z","modified":"2026-10-24T02:48:54.901312496Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/114xxx/CVE-2026-114637.json"},{"type":"ADVISORY","url":"https://github.com/traefik/traefik/security/advisories/GHSA-53qr-784g-cj35"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-114637"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/traefik-3.2.0-before-3.7.14-fastproxy-ntlm-negotiate-connection-pool-identity-leak"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-24T02:48:54.901312496Z"}}