{"id":"CVE-2021-37156","aliases":["BIT-redmine-2021-37156","EUVD-2021-23730","GHSA-ghph-4rfg-4x3f","UBUNTU-CVE-2021-37156"],"status":"published","title":"Redmine 4.2.0 and 4.2.1 allow existing user sessions to continue upon enabling two-factor...","description":"Redmine 4.2.0 and 4.2.1 allow existing user sessions to continue upon enabling two-factor authentication for the user's account, but the intended behavior is for those sessions to be terminated.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.01013,"percentile":0.63684,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-613"],"published":"2021-08-05T20:36:35Z","modified":"2026-10-24T10:30:56Z","fixes":[{"ecosystem":"Bitnami","package":"redmine","fixed_in":["4.2.1","4.2.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"redmine","ranges":[{"type":"SEMVER","events":[{"introduced":"4.2.0"},{"fixed":"4.2.1"},{"introduced":"4.2.1"},{"fixed":"4.2.2"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"redmine","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0~20140825-8","3.2.0-1","3.2.0-3","3.2.1-1","3.2.1-2","3.2.1-2ubuntu0.2"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"redmine","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.3.1-4","3.4.2-1","3.4.4-1","3.4.4-1ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"redmine","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.4-1","4.0.4-3","4.0.6-2"]}],"products":[{"vendor":"redmine","product":"redmine"}],"references":[{"url":"https://www.redmine.org/projects/redmine/wiki/Security_Advisories","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory","report"]},{"url":"https://www.redmine.org/news/132","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-37156","tags":["web"]},{"url":"https://github.com/advisories/GHSA-ghph-4rfg-4x3f"},{"url":"https://ubuntu.com/security/CVE-2021-37156","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-37156","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-37156","description":"Redmine 4.2.0 and 4.2.1 allow existing user sessions to continue upon enabling two-factor authentication for the user's account, but the intended behavior is for those sessions to be terminated.","status":"published","published":"2021-08-05T20:36:35Z","modified":"2024-08-04T01:16:02.538Z","updated_at":"2026-11-02T14:32:58.028461Z"}],"euvd":[{"id":"EUVD-2021-23730","description":"Redmine 4.2.0 and 4.2.1 allow existing user sessions to continue upon enabling two-factor authentication for the user's account, but the intended behavior is for those sessions to be terminated.","status":"published","published":"2021-08-05T20:36:35Z","modified":"2024-08-04T01:16:02Z","updated_at":"2026-11-03T03:24:28.314716Z"}],"ghsa":[{"id":"GHSA-ghph-4rfg-4x3f","title":"Redmine 4.2.0 and 4.2.1 allow existing user sessions to continue upon enabling two-factor...","description":"Redmine 4.2.0 and 4.2.1 allow existing user sessions to continue upon enabling two-factor authentication for the user's account, but the intended behavior is for those sessions to be terminated.","status":"published","published":"2022-05-24T19:10:04Z","modified":"2023-01-30T05:01:15Z","cwes":["CWE-613"],"updated_at":"2026-11-02T14:46:22.009402Z"}],"nvd":[{"id":"CVE-2021-37156","description":"Redmine 4.2.0 and 4.2.1 allow existing user sessions to continue upon enabling two-factor authentication for the user's account, but the intended behavior is for those sessions to be terminated.","status":"published","published":"2021-08-05T21:15:12.643Z","modified":"2026-06-17T04:00:09.613Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-613"],"updated_at":"2026-11-02T14:06:56.562207Z"}],"osv":[{"id":"CVE-2021-37156","description":"Redmine 4.2.0 and 4.2.1 allow existing user sessions to continue upon enabling two-factor authentication for the user's account, but the intended behavior is for those sessions to be terminated.","status":"published","published":"2021-08-05T21:15:12.643Z","modified":"2026-10-24T10:30:56.76594405Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:20.434873Z"},{"id":"UBUNTU-CVE-2021-37156","description":"Redmine 4.2.0 and 4.2.1 allow existing user sessions to continue upon enabling two-factor authentication for the user's account, but the intended behavior is for those sessions to be terminated.","status":"published","published":"2021-08-05T21:15:00Z","modified":"2025-10-24T04:50:27Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:54:27.870979Z"},{"id":"BIT-redmine-2021-37156","description":"Redmine 4.2.0 and 4.2.1 allow existing user sessions to continue upon enabling two-factor authentication for the user's account, but the intended behavior is for those sessions to be terminated.","status":"published","published":"2024-03-06T11:04:33.001Z","modified":"2026-09-08T08:48:19.20672136Z","updated_at":"2026-11-02T15:28:35.111822Z"}]}}