{"id":"CVE-2025-59841","aliases":["EUVD-2025-31126","GHSA-h6pr-4cwv-6cjg"],"status":"published","title":"FlagForgeCTF's Improper Session Handling Allows Access After Logout","description":"Flag Forge is a Capture The Flag (CTF) platform. In versions from 2.2.0 to before 2.3.1, the FlagForge web application improperly handles session invalidation. Authenticated users can continue to access protected endpoints, such as /api/profile, even after logging out. CSRF tokens are also still valid post-logout, which can allow unauthorized actions. This issue has been patched in version 2.3.1.","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":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00394,"percentile":0.3393,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-384","CWE-613"],"published":"2025-09-25T15:15:45Z","modified":"2026-10-28T02:30:38Z","products":[{"vendor":"flagforge","product":"flagforge"},{"vendor":"flagforgectf","product":"flagforge"}],"references":[{"url":"https://github.com/FlagForgeCTF/flagForge/security/advisories/GHSA-h6pr-4cwv-6cjg","tags":["x_refsource_CONFIRM","Vendor Advisory","advisory"]},{"url":"https://github.com/FlagForgeCTF/flagForge/commit/304b6c82a4f76871b336404b91e5cdd8a7d7d5bd","tags":["x_refsource_MISC","Patch","fix"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/59xxx/CVE-2025-59841.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-59841","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2025-59841","title":"FlagForgeCTF's Improper Session Handling Allows Access After Logout","description":"Flag Forge is a Capture The Flag (CTF) platform. In versions from 2.2.0 to before 2.3.1, the FlagForge web application improperly handles session invalidation. Authenticated users can continue to access protected endpoints, such as /api/profile, even after logging out. CSRF tokens are also still valid post-logout, which can allow unauthorized actions. This issue has been patched in version 2.3.1.","status":"published","published":"2025-09-25T15:15:45.438Z","modified":"2025-09-29T15:48:10.233Z","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":"cna"}],"cwes":["CWE-384","CWE-613"],"updated_at":"2026-11-02T14:32:48.167635Z"}],"euvd":[{"id":"EUVD-2025-31126","description":"Flag Forge is a Capture The Flag (CTF) platform. In versions from 2.2.0 to before 2.3.1, the FlagForge web application improperly handles session invalidation. Authenticated users can continue to access protected endpoints, such as /api/profile, even after logging out. CSRF tokens are also still valid post-logout, which can allow unauthorized actions. This issue has been patched in version 2.3.1.","status":"published","published":"2025-09-25T15:15:45Z","modified":"2025-09-29T15:48:10Z","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":"2026-11-02T20:31:38.60496Z"}],"nvd":[{"id":"CVE-2025-59841","description":"Flag Forge is a Capture The Flag (CTF) platform. In versions from 2.2.0 to before 2.3.1, the FlagForge web application improperly handles session invalidation. Authenticated users can continue to access protected endpoints, such as /api/profile, even after logging out. CSRF tokens are also still valid post-logout, which can allow unauthorized actions. This issue has been patched in version 2.3.1.","status":"published","published":"2025-09-25T16:15:35.94Z","modified":"2026-10-11T20:10:00.2Z","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-384","CWE-613"],"updated_at":"2026-11-02T14:11:33.36253Z"}],"osv":[{"id":"CVE-2025-59841","title":"FlagForgeCTF's Improper Session Handling Allows Access After Logout","description":"Flag Forge is a Capture The Flag (CTF) platform. In versions from 2.2.0 to before 2.3.1, the FlagForge web application improperly handles session invalidation. Authenticated users can continue to access protected endpoints, such as /api/profile, even after logging out. CSRF tokens are also still valid post-logout, which can allow unauthorized actions. This issue has been patched in version 2.3.1.","status":"published","published":"2025-09-25T15:15:45.438Z","modified":"2026-10-28T02:30:38.280248506Z","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-384","CWE-613"],"updated_at":"2026-11-02T15:44:51.516975Z"}]}}