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.
Metrics
Affected Vendors & Products
Advisories
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Fixes
Solution
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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 |
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| Weaknesses | CWE-488 | |
| CPEs | cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Traefik
Traefik traefik |
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| References |
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| Metrics |
cvssV3_1
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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
No data.
Weaknesses