{"@context":"https://openvex.dev/ns/v0.2.0","@id":"https://database.harborguard.co/cve/CVE-2026-55196/vex.json","author":"HarborGuard Database","role":"Document Creator","timestamp":"2026-06-17T17:58:56.543Z","version":1,"tooling":"HarborGuard Database (https://database.harborguard.co)","statements":[{"vulnerability":{"name":"CVE-2026-55196","@id":"https://www.cve.org/CVERecord?id=CVE-2026-55196","description":"Hermes WebUI before 0.51.409 contains an authentication bypass vulnerability in passkey registration endpoints that allows unauthenticated remote attackers to register arbitrary passkeys. When HERMES_WEBUI_PASSKEY=1 is enabled with no existing credentials, POST /api/auth/passkey/register/options and POST /api/auth/passkey/register endpoints are accessible without authentication, allowing attackers to claim the first passkey and gain permanent administrative control."},"products":[{"@id":"cpe:2.3:a:hermes-webui:hermes-webui:*:*:*:*:*:*:*:*","identifiers":{"cpe23":"cpe:2.3:a:hermes-webui:hermes-webui:*:*:*:*:*:*:*:*"}}],"status":"affected","action_statement":"Update to a fixed version: 0.51.409.","timestamp":"2026-06-17T17:58:56.543Z"}]}