HIGH 7.0 NVD
CVE-2026-114639
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: Negotiat
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.
References
- https://github.com/traefik/traefik/security/advisories/GHSA-qm9f-w54v-q2qh
- https://www.vulncheck.com/advisories/traefik-before-2.11.58-and-3.7.14-authentication-bypa
This high severity vulnerability with a CVSS score of 7.0 was published on 2026-10-22 via NVD.
vulnfeed aggregates 18809 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.