CVE-2026-114656 — Traefik before 2.11.58 and 3.7.13 mTLS Bypass via Negated Host Matcher
Traefik before 2.11.58 and 3.7.13 contains an authentication bypass vulnerability that allows unauthenticated clients to skip client-certificate checks because negated Host matc…
Published: 2026-10-22 · CVSS: 6.9 · CVSS 4.0
Traefik before 2.11.58 and 3.7.13 contains an authentication bypass vulnerability that allows unauthenticated clients to skip client-certificate checks because negated Host matchers are counted as served domains. Attackers can reach backends protected by RequireAndVerifyClientCert when a router rule with !Host() creates a TLS options conflict that falls back to the default options.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7