{"id":"CVE-2023-53951","aliases":["EUVD-2025-204596","GHSA-qh83-9fpx-6f4r"],"status":"published","title":"Ever Gauzy v0.281.9 JWT Authentication Weakness via HMAC Secret","description":"Ever Gauzy v0.281.9 contains a JWT authentication vulnerability that allows attackers to exploit weak HMAC secret key implementation. Attackers can leverage the exposed JWT token to authenticate and gain unauthorized access with administrative permissions.","severity":{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00359,"percentile":0.30081,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-347"],"published":"2025-12-19T21:05:50Z","modified":"2026-10-28T02:30:48Z","products":[{"vendor":"gauzy","product":"ever gauzy"}],"references":[{"url":"https://www.exploit-db.com/exploits/51354","tags":["exploit","evidence"]},{"url":"https://github.com/ever-co/ever-gauzy","tags":["product","package"]},{"url":"https://www.vulncheck.com/advisories/ever-gauzy-jwt-authentication-weakness-via-hmac-secret","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-53951","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-qh83-9fpx-6f4r"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53951.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2023-53951","title":"Ever Gauzy v0.281.9 JWT Authentication Weakness via HMAC Secret","description":"Ever Gauzy v0.281.9 contains a JWT authentication vulnerability that allows attackers to exploit weak HMAC secret key implementation. Attackers can leverage the exposed JWT token to authenticate and gain unauthorized access with administrative permissions.","status":"published","published":"2025-12-19T21:05:50.739Z","modified":"2026-04-07T14:08:08.106Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical","assessor":"cna"},{"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":"cna"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:35:31.264455Z"}],"euvd":[{"id":"EUVD-2025-204596","description":"Ever Gauzy v0.281.9 contains a JWT authentication vulnerability that allows attackers to exploit weak HMAC secret key implementation. Attackers can leverage the exposed JWT token to authenticate and gain unauthorized access with administrative permissions.","status":"published","published":"2025-12-19T21:05:50Z","modified":"2026-04-07T14:08:08Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical"}],"updated_at":"2026-11-02T19:25:13.335741Z"}],"ghsa":[{"id":"GHSA-qh83-9fpx-6f4r","title":"Ever Gauzy v0.281.9 contains a JWT authentication vulnerability that allows attackers to exploit...","description":"Ever Gauzy v0.281.9 contains a JWT authentication vulnerability that allows attackers to exploit weak HMAC secret key implementation. 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Attackers can leverage the exposed JWT token to authenticate and gain unauthorized access with administrative permissions.","status":"published","published":"2025-12-19T21:15:51.24Z","modified":"2026-06-17T06:46:24.507Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical","assessor":"secondary"},{"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":"2026-11-02T14:09:26.50087Z"}],"osv":[{"id":"CVE-2023-53951","title":"Ever Gauzy v0.281.9 JWT Authentication Weakness via HMAC Secret","description":"Ever Gauzy v0.281.9 contains a JWT authentication vulnerability that allows attackers to exploit weak HMAC secret key implementation. Attackers can leverage the exposed JWT token to authenticate and gain unauthorized access with administrative permissions.","status":"published","published":"2025-12-19T21:05:50.739Z","modified":"2026-10-28T02:30:48.368130207Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T15:44:36.491684Z"}]}}