{"@context":"https://openvex.dev/ns/v0.2.0","@id":"https://database.harborguard.co/cve/CVE-2026-53622/vex.json","author":"HarborGuard Database","role":"Document Creator","timestamp":"2026-06-30T03:18:42.111Z","version":1,"tooling":"HarborGuard Database (https://database.harborguard.co)","statements":[{"vulnerability":{"name":"CVE-2026-53622","@id":"https://www.cve.org/CVERecord?id=CVE-2026-53622","description":"Traefik is an HTTP reverse proxy and load balancer. Prior to 3.7.3, there is a critical vulnerability in Traefik's HTTP/3 (QUIC) TLS configuration selection that allows unauthenticated clients to bypass router-specific mTLS enforcement. When HTTP/3 is enabled on an entrypoint, the TLS handshake selects the applicable TLS configuration through an exact, case-sensitive lookup on the SNI value, which fails to match wildcard host patterns (e.g., *.example.com) or case variants of the configured host"},"products":[{"@id":"cpe:2.3:a:traefik:traefik:\\<_3.7.3:*:*:*:*:*:*:*","identifiers":{"cpe23":"cpe:2.3:a:traefik:traefik:\\<_3.7.3:*:*:*:*:*:*:*"}}],"status":"affected","action_statement":"No fixed version is published yet; monitor the upstream advisory.","timestamp":"2026-06-30T03:18:42.111Z"}]}