{"id":"CVE-2026-114639","published":"2026-10-22T02:16:56.800","lastModified":"2026-10-22T15:39:30.497","description":"Traefik 2.11.0 before 2.11.58 and 3.0.0 before 3.7.14 contains an authentication bypass because a first request preauthenticated with an Authorization: Negotiate token authenticates a socket in the globally shared backend connection pool, which is never isolated. Unauthenticated attackers on separate frontend connections can be assigned that NTLM/Kerberos-bound socket and perform reads or writes with the victim's identity.","cvssScore":8.7,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","cwes":["CWE-287"],"vendors":[],"products":[],"references":[{"url":"https://github.com/traefik/traefik/security/advisories/GHSA-qm9f-w54v-q2qh","tags":[]},{"url":"https://www.vulncheck.com/advisories/traefik-before-2.11.58-and-3.7.14-authentication-bypass-via-negotiate-connection-pool","tags":[]}],"exploitRefs":[{"url":"https://github.com/traefik/traefik/security/advisories/GHSA-qm9f-w54v-q2qh","tags":[]}],"hasPoc":true,"ai":null}