{"id":"CVE-2021-37866","aliases":["EUVD-2021-24344","GHSA-g28x-633f-r8qf"],"status":"published","title":"Session is not invalidated on server-side when user logged out of Boards","description":"Mattermost Boards plugin v0.10.0 and earlier fails to invalidate a session on the server-side when a user logged out of Boards, which allows an attacker to reuse old session token for authorization.","severity":{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00723,"percentile":0.54351,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-613"],"published":"2022-01-18T16:52:16Z","modified":"2026-06-17T04:01:13Z","products":[{"vendor":"mattermost","product":"mattermost boards"},{"vendor":"mattermost","product":"mattermost_boards"}],"references":[{"url":"https://mattermost.com/security-updates/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-37866","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-37866"},{"url":"https://github.com/advisories/GHSA-g28x-633f-r8qf"}],"sources":{"cve":[{"id":"CVE-2021-37866","title":"Session is not invalidated on server-side when user logged out of Boards","description":"Mattermost Boards plugin v0.10.0 and earlier fails to invalidate a session on the server-side when a user logged out of Boards, which allows an attacker to reuse old session token for authorization.","status":"published","published":"2022-01-18T16:52:16Z","modified":"2024-12-06T23:11:40.14Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-613"],"updated_at":"2026-11-02T14:32:58.359368Z"}],"euvd":[{"id":"EUVD-2021-24344","description":"Mattermost Boards plugin v0.10.0 and earlier fails to invalidate a session on the server-side when a user logged out of Boards, which allows an attacker to reuse old session token for authorization.","status":"published","published":"2022-01-18T16:52:16Z","modified":"2024-12-06T23:11:40Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T00:04:38.652605Z"}],"ghsa":[{"id":"GHSA-g28x-633f-r8qf","title":"Mattermost Boards plugin v0.10.0 and earlier fails to invalidate a session on the server-side...","description":"Mattermost Boards plugin v0.10.0 and earlier fails to invalidate a session on the server-side when a user logged out of Boards, which allows an attacker to reuse old session token for authorization.","status":"published","published":"2022-01-19T00:01:09Z","modified":"2023-02-03T05:04:38Z","cwes":["CWE-613"],"updated_at":"2026-11-02T14:53:35.806518Z"}],"nvd":[{"id":"CVE-2021-37866","description":"Mattermost Boards plugin v0.10.0 and earlier fails to invalidate a session on the server-side when a user logged out of Boards, which allows an attacker to reuse old session token for authorization.","status":"published","published":"2022-01-18T17:15:08.503Z","modified":"2026-06-17T04:01:13.553Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-613"],"updated_at":"2026-11-02T14:07:03.821385Z"}]}}