| Package | Affected versions | Patched versions |
|---|---|---|
| traefik | ≥ 3.0.0, < 3.7.13< 2.11.58 | 3.7.132.11.58 |
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.
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