{"id":"CVE-2026-36721","aliases":["EUVD-2026-35923","GHSA-hjjc-9hhm-h336"],"status":"published","title":"A lack of cryptographic signature verification in the validateAccessToken function of bookcars v8...","description":"A lack of cryptographic signature verification in the validateAccessToken function of bookcars v8.3 allows attackers to bypass authentication via a forged JWT token.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.00268,"percentile":0.1916,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-347"],"published":"2026-06-09T00:00:00Z","modified":"2026-07-23T09:10:00Z","references":[{"url":"https://github.com/CC-T-454455/Vulnerabilities/tree/master/bookcars/vulnerability-2","tags":["exploit"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-36721"},{"url":"https://github.com/advisories/GHSA-hjjc-9hhm-h336"}],"sources":{"cve":[{"id":"CVE-2026-36721","description":"A lack of cryptographic signature verification in the validateAccessToken function of bookcars v8.3 allows attackers to bypass authentication via a forged JWT token.","status":"published","published":"2026-06-09T00:00:00Z","modified":"2026-06-10T13:55:28.804Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:19:55.176387Z"}],"euvd":[{"id":"EUVD-2026-35923","description":"A lack of cryptographic signature verification in the validateAccessToken function of bookcars v8.3 allows attackers to bypass authentication via a forged JWT token.","status":"published","published":"2026-06-09T00:00:00Z","modified":"2026-06-10T13:55:28Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T18:20:45.405546Z"}],"ghsa":[{"id":"GHSA-hjjc-9hhm-h336","title":"A lack of cryptographic signature verification in the validateAccessToken function of bookcars v8...","description":"A lack of cryptographic signature verification in the validateAccessToken function of bookcars v8.3 allows attackers to bypass authentication via a forged JWT token.","status":"published","published":"2026-06-09T21:32:33Z","modified":"2026-06-10T15:32:34Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T15:08:43.963781Z"}],"nvd":[{"id":"CVE-2026-36721","description":"A lack of cryptographic signature verification in the validateAccessToken function of bookcars v8.3 allows attackers to bypass authentication via a forged JWT token.","status":"published","published":"2026-06-09T19:17:42.5Z","modified":"2026-07-23T09:10:00.113Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:12:23.109705Z"}]}}