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CVE PROGRAM SOURCE RECORD7.0 High

CVE-2026-114639

Traefik before 2.11.58 and 3.7.14 Authentication Bypass via Negotiate Connection Pool

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Status
Published
Published
Updated
Assigning organization
VulnCheck

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

traefik traefik

Default version status: unaffected

  • 2.11.0 to < 2.11.58affected
  • 2.11.58unaffected
pkg:golang/github.com/traefik/traefik/v2

traefik traefik

Default version status: unaffected

  • 3.0.0 to < 3.7.14affected
  • 3.7.14unaffected
pkg:golang/github.com/traefik/traefik/v3

References