{"id":"CVE-2023-40545","aliases":["EUVD-2023-45116","GHSA-37j2-h4x2-rp3v"],"status":"published","title":"PingFederate OAuth client_secret_jwt Authentication Bypass","description":"Authentication bypass when an OAuth2 Client is using client_secret_jwt as its authentication method on affected 11.3 versions via specially crafted requests.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00933,"percentile":0.60972,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-306"],"published":"2024-02-06T17:27:42Z","modified":"2026-06-17T06:18:23Z","products":[{"vendor":"ping identity","product":"pingfederate"},{"vendor":"pingidentity","product":"pingfederate"}],"references":[{"url":"https://support.pingidentity.com/s/article/SECADV040-PingFederate-OAuth-Client-Authentication-Bypass","tags":["x_transferred","Permissions Required"]},{"url":"https://www.pingidentity.com/en/resources/downloads/pingfederate/previous-releases.html","tags":["x_transferred","Release Notes"]},{"url":"https://docs.pingidentity.com/r/en-us/pingfederate-113/hro1701116403236","tags":["x_transferred","Release Notes"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-40545"},{"url":"https://github.com/advisories/GHSA-37j2-h4x2-rp3v"}],"sources":{"cve":[{"id":"CVE-2023-40545","title":"PingFederate OAuth client_secret_jwt Authentication Bypass","description":"Authentication bypass when an OAuth2 Client is using client_secret_jwt as its authentication method on affected 11.3 versions via specially crafted requests.\n","status":"published","published":"2024-02-06T17:27:42.361Z","modified":"2024-08-22T16:53:12.079Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:35:22.309324Z"}],"euvd":[{"id":"EUVD-2023-45116","description":"Authentication bypass when an OAuth2 Client is using client_secret_jwt as its authentication method on affected 11.3 versions via specially crafted requests.\n","status":"published","published":"2024-02-06T17:27:42Z","modified":"2024-08-22T16:53:12Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T00:56:13.216602Z"}],"ghsa":[{"id":"GHSA-37j2-h4x2-rp3v","title":"Authentication bypass when an OAuth2 Client is using client_secret_jwt as its authentication...","description":"Authentication bypass when an OAuth2 Client is using client_secret_jwt as its authentication method on affected 11.3 versions via specially crafted requests.\n","status":"published","published":"2024-02-06T18:30:21Z","modified":"2024-02-06T18:30:26Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:55:34.118086Z"}],"nvd":[{"id":"CVE-2023-40545","description":"Authentication bypass when an OAuth2 Client is using client_secret_jwt as its authentication method on affected 11.3 versions via specially crafted requests.\n","status":"published","published":"2024-02-06T18:15:58.47Z","modified":"2026-06-17T06:18:23.82Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","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":"primary"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:09:04.527564Z"}]}}