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.
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 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. | |
| Title | Traefik v3.2.0 before v3.7.14 FastProxy NTLM/Negotiate Connection Pool Identity Leak | |
| First Time appeared |
Traefik
Traefik traefik |
|
| Weaknesses | CWE-488 | |
| CPEs | cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Traefik
Traefik traefik |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-10-22T01:43:37.851Z
Reserved: 2026-10-21T21:57:36.197Z
Link: CVE-2026-114637
No data.
Status : Received
Published: 2026-10-22T02:16:56.503
Modified: 2026-10-22T02:16:56.503
Link: CVE-2026-114637
No data.
OpenCVE Enrichment
Updated: 2026-10-22T10:00:05Z
Weaknesses