CVE-2026-114642 (GCVE-0-2026-114642)
Vulnerability from cvelistv5 – Published: 2026-10-22 01:43 – Updated: 2026-10-23 15:07
VLAI
EPSS
VEX
Title
Traefik before 2.11.58 and 3.7.14 TLS Config Bypass via NTLM/Kerberos Round Tripper
Summary
Traefik 2.11.0 before 2.11.58 and 3.0.0 before 3.7.14 stores its NTLM/Kerberos backend round tripper in a client-connection slot not keyed by ServersTransport, so one service's TLS client configuration is reused for another service's backend. An unauthenticated client can arm the slot via a backend issuing an NTLM or Negotiate challenge, then reach another service on the same keep-alive connection, bypassing its root CAs, server name, and certificate verification.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-23 14:48 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/traefik/traefik/security/advis… | vendor-advisory |
| https://www.vulncheck.com/advisories/traefik-befo… | third-party-advisory |
Impacted products
Date Public
2026-10-07 00:00
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