Vulnerability Details CVE-2026-114656
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 5.2%
CVSS Severity
CVSS v3 Score 7.5