{"id":"CVE-2025-24896","aliases":["EUVD-2025-3978","GHSA-w98m-j6hq-cwjm"],"status":"published","title":"Misskey allows token to remain valid in cookie after signing out","description":"Misskey is an open source, federated social media platform. Starting in version 12.109.0 and prior to version 2025.2.0-alpha.0, a login token named `token` is stored in a cookie for authentication purposes in Bull Dashboard, but this remains undeleted even after logout is performed. The primary affected users will be users who have logged into Misskey using a public PC or someone else's device, but it's possible that users who have logged out of Misskey before lending their PC to someone else could also be affected. Version 2025.2.0-alpha.0 contains a fix for this issue.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00599,"percentile":0.49005,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-613"],"published":"2025-02-11T15:14:09Z","modified":"2026-10-28T02:30:32Z","products":[{"vendor":"misskey","product":"misskey"},{"vendor":"misskey-dev","product":"misskey"}],"references":[{"url":"https://github.com/misskey-dev/misskey/security/advisories/GHSA-w98m-j6hq-cwjm","tags":["x_refsource_CONFIRM","Vendor Advisory","advisory"]},{"url":"https://github.com/misskey-dev/misskey/commit/ba9f295ef2bf31cc90fa587e20b9a7655b7a1824","tags":["x_refsource_MISC","Patch","fix"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/24xxx/CVE-2025-24896.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-24896","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2025-24896","title":"Misskey allows token to remain valid in cookie after signing out","description":"Misskey is an open source, federated social media platform. Starting in version 12.109.0 and prior to version 2025.2.0-alpha.0, a login token named `token` is stored in a cookie for authentication purposes in Bull Dashboard, but this remains undeleted even after logout is performed. The primary affected users will be users who have logged into Misskey using a public PC or someone else's device, but it's possible that users who have logged out of Misskey before lending their PC to someone else could also be affected. Version 2025.2.0-alpha.0 contains a fix for this issue.","status":"published","published":"2025-02-11T15:14:09.305Z","modified":"2025-02-12T20:51:44.328Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-613"],"updated_at":"2026-11-02T14:32:43.770144Z"}],"euvd":[{"id":"EUVD-2025-3978","description":"Misskey is an open source, federated social media platform. Starting in version 12.109.0 and prior to version 2025.2.0-alpha.0, a login token named `token` is stored in a cookie for authentication purposes in Bull Dashboard, but this remains undeleted even after logout is performed. The primary affected users will be users who have logged into Misskey using a public PC or someone else's device, but it's possible that users who have logged out of Misskey before lending their PC to someone else could also be affected. Version 2025.2.0-alpha.0 contains a fix for this issue.","status":"published","published":"2025-02-11T15:14:09Z","modified":"2025-02-12T20:51:44Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-03T00:03:55.950052Z"}],"nvd":[{"id":"CVE-2025-24896","description":"Misskey is an open source, federated social media platform. Starting in version 12.109.0 and prior to version 2025.2.0-alpha.0, a login token named `token` is stored in a cookie for authentication purposes in Bull Dashboard, but this remains undeleted even after logout is performed. The primary affected users will be users who have logged into Misskey using a public PC or someone else's device, but it's possible that users who have logged out of Misskey before lending their PC to someone else could also be affected. Version 2025.2.0-alpha.0 contains a fix for this issue.","status":"published","published":"2025-02-11T16:15:51.477Z","modified":"2026-06-17T08:59:48.27Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-613"],"updated_at":"2026-11-02T14:10:50.916773Z"}],"osv":[{"id":"CVE-2025-24896","title":"Misskey allows token to remain valid in cookie after signing out","description":"Misskey is an open source, federated social media platform. Starting in version 12.109.0 and prior to version 2025.2.0-alpha.0, a login token named `token` is stored in a cookie for authentication purposes in Bull Dashboard, but this remains undeleted even after logout is performed. The primary affected users will be users who have logged into Misskey using a public PC or someone else's device, but it's possible that users who have logged out of Misskey before lending their PC to someone else could also be affected. Version 2025.2.0-alpha.0 contains a fix for this issue.","status":"published","published":"2025-02-11T15:14:09.305Z","modified":"2026-10-28T02:30:32.803266738Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-613"],"updated_at":"2026-11-02T15:44:47.386092Z"}]}}