What is GHSA-x4hj-7xc2-whmq?

GHSA-x4hj-7xc2-whmq is a security advisory published by GitHub Security Advisories with High severity. Traefik 2.11.0 before 2.11.58 and 3.0.0 before 3.7.14 stores its NTLM/Kerberos backend round...

Which CVE IDs does GHSA-x4hj-7xc2-whmq cover?

GHSA-x4hj-7xc2-whmq covers the following CVE IDs: CVE-2026-114642. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-x4hj-7xc2-whmq?

GHSA-x4hj-7xc2-whmq has a CVSS v3 base score of 8.7, published by GitHub Security Advisories.

GHSA-x4hj-7xc2-whmqHighCVSS 8.7

Traefik 2.11.0 before 2.11.58 and 3.0.0 before 3.7.14 stores its NTLM/Kerberos backend round...

Vendor

GitHub Security Advisories

Published

October 22, 2026

Last Modified

October 22, 2026

🔗 CVE IDs covered (1)

CVE-2026-114642 →

📋 Description

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.

🔗 References (4)

https://github.com/traefik/traefik/security/advisories/GHSA-cw35-4q88-3rmp
https://nvd.nist.gov/vuln/detail/CVE-2026-114642
https://www.vulncheck.com/advisories/traefik-before-2.11.58-and-3.7.14-tls-config-bypass-via-ntlm-kerberos-round-tripper
https://github.com/advisories/GHSA-x4hj-7xc2-whmq