CVE-2026-65600 Traefik before v2.11.52 Authentication Bypass via ReplacePathRegex

Traefik versions = v3.6.0 = v3.7.0 = v3.7.6 contain an authentication bypass via path traversal in the ReplacePathRegex middleware. When ReplacePathRegex is configured with a regex that captures user-controlled path segments without a mandatory path separator e.g. regex "^/api.", replacement "/$1...

CVE-2026-65600 Traefik before v2.11.52 Authentication Bypass via ReplacePathRegex

Traefik versions = v3.6.0 = v3.7.0 = v3.7.6 contain an authentication bypass via path traversal in the ReplacePathRegex middleware. When ReplacePathRegex is configured with a regex that captures user-controlled path segments without a mandatory path separator e.g. regex "^/api.", replacement "/$1...

PT-2026-63358

Traefik versions = v3.6.0 = v3.7.0 = v3.7.6 contain an authentication bypass via path traversal in the ReplacePathRegex middleware. When ReplacePathRegex is configured with a regex that captures user-controlled path segments without a mandatory path separator e.g. regex "^/api.", replacement "/$1...