{"id":"CVE-2025-24973","aliases":["EUVD-2025-3998","GHSA-2369-p2wh-7cc2"],"status":"published","title":"Concorde not removing authentication tokens after logging out","description":"Concorde, formerly know as Nexkey, is a fork of the federated microblogging platform Misskey. Prior to version 12.25Q1.1, due to an improper implementation of the logout process, authentication credentials remain in cookies even after a user has explicitly logged out, which may allow an attacker to steal authentication tokens. This could have devastating consequences if a user with admin privileges is (or was) using a shared device. Users who have logged in on a shared device should go to Settings \u003e Security and regenerate their login tokens. Version 12.25Q1.1 fixes the issue. As a workaround, clear cookies and site data in the browser after logging out.","severity":{"version":"3.1","score":9.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00188,"percentile":0.08416,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-613"],"published":"2025-02-11T15:41:41Z","modified":"2026-10-28T02:30:43Z","products":[{"vendor":"nexryai","product":"concorde"}],"references":[{"url":"https://github.com/nexryai/concorde/security/advisories/GHSA-2369-p2wh-7cc2","tags":["x_refsource_CONFIRM","advisory"]},{"url":"https://github.com/nexryai/concorde/commit/1f6ac9b289906083b132e4f9667a31a60ef83e4e","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/24xxx/CVE-2025-24973.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-24973","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2025-24973","title":"Concorde not removing authentication tokens after logging out","description":"Concorde, formerly know as Nexkey, is a fork of the federated microblogging platform Misskey. Prior to version 12.25Q1.1, due to an improper implementation of the logout process, authentication credentials remain in cookies even after a user has explicitly logged out, which may allow an attacker to steal authentication tokens. This could have devastating consequences if a user with admin privileges is (or was) using a shared device. Users who have logged in on a shared device should go to Settings \u003e Security and regenerate their login tokens. Version 12.25Q1.1 fixes the issue. As a workaround, clear cookies and site data in the browser after logging out.","status":"published","published":"2025-02-11T15:41:41.811Z","modified":"2025-02-11T16:12:06.824Z","cvss":[{"version":"3.1","score":9.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-613"],"updated_at":"2026-11-02T14:32:43.770144Z"}],"euvd":[{"id":"EUVD-2025-3998","description":"Concorde, formerly know as Nexkey, is a fork of the federated microblogging platform Misskey. Prior to version 12.25Q1.1, due to an improper implementation of the logout process, authentication credentials remain in cookies even after a user has explicitly logged out, which may allow an attacker to steal authentication tokens. This could have devastating consequences if a user with admin privileges is (or was) using a shared device. Users who have logged in on a shared device should go to Settings \u003e Security and regenerate their login tokens. Version 12.25Q1.1 fixes the issue. As a workaround, clear cookies and site data in the browser after logging out.","status":"published","published":"2025-02-11T15:41:41Z","modified":"2025-02-11T16:12:06Z","cvss":[{"version":"3.1","score":9.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-03T00:03:59.282543Z"}],"nvd":[{"id":"CVE-2025-24973","description":"Concorde, formerly know as Nexkey, is a fork of the federated microblogging platform Misskey. Prior to version 12.25Q1.1, due to an improper implementation of the logout process, authentication credentials remain in cookies even after a user has explicitly logged out, which may allow an attacker to steal authentication tokens. This could have devastating consequences if a user with admin privileges is (or was) using a shared device. Users who have logged in on a shared device should go to Settings \u003e Security and regenerate their login tokens. Version 12.25Q1.1 fixes the issue. As a workaround, clear cookies and site data in the browser after logging out.","status":"published","published":"2025-02-11T16:15:52.02Z","modified":"2026-06-17T08:59:54.557Z","cvss":[{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-613"],"updated_at":"2026-11-02T14:10:50.916773Z"}],"osv":[{"id":"CVE-2025-24973","title":"Concorde not removing authentication tokens after logging out","description":"Concorde, formerly know as Nexkey, is a fork of the federated microblogging platform Misskey. Prior to version 12.25Q1.1, due to an improper implementation of the logout process, authentication credentials remain in cookies even after a user has explicitly logged out, which may allow an attacker to steal authentication tokens. This could have devastating consequences if a user with admin privileges is (or was) using a shared device. Users who have logged in on a shared device should go to Settings \u003e Security and regenerate their login tokens. Version 12.25Q1.1 fixes the issue. As a workaround, clear cookies and site data in the browser after logging out.","status":"published","published":"2025-02-11T15:41:41.811Z","modified":"2026-10-28T02:30:43.567655466Z","cvss":[{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-613"],"updated_at":"2026-11-02T15:44:47.386092Z"}]}}