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.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Thu, 22 Oct 2026 02:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Traefik before 2.11.58 and 3.7.14 Authentication Bypass via Negotiate Connection Pool | |
| First Time appeared |
Traefik
Traefik traefik |
|
| Weaknesses | CWE-287 | |
| CPEs | cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Traefik
Traefik traefik |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
Sign in to view the affected projects.
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-10-22T01:43:39.232Z
Reserved: 2026-10-21T21:57:36.197Z
Link: CVE-2026-114639
No data.
Status : Received
Published: 2026-10-22T02:16:56.800
Modified: 2026-10-22T02:16:56.800
Link: CVE-2026-114639
No data.
OpenCVE Enrichment
Updated: 2026-10-22T08:45:02Z
Weaknesses