high · CVSS v3 7.5 · CVSS v4 6.9

CVE-2026-114656

Traefik before 2.11.58 and 3.7.13 contains an authentication bypass vulnerability that allows unauthenticated clients to…

Description

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.

Scores

Severity
high
CVSS v2
6.1
CVSS v3
7.5
CVSS v4
6.9
EPSS
—

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