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CVE PROGRAM SOURCE RECORD6.3 Medium

CVE-2026-114641

Traefik before 2.11.58 and 3.7.14 Race Condition in NTLM/Kerberos Round Tripper

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Status
Published
Published
Updated
Assigning organization
VulnCheck

Description

Traefik 2.11.x before 2.11.58 and 3.x before 3.7.14 contains a race condition in NTLM and Kerberos (Negotiate) backend authentication, where the per-connection sticky round tripper slot is read and written without synchronization. Remote attackers can send concurrent HTTP/2 or HTTP/3 requests over one connection to orphan backend connections, break connection-bound authentication, or crash Traefik.

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