{"id":"CVE-2023-40343","aliases":["EUVD-2023-2218","GHSA-5r33-mgjf-6656"],"status":"published","title":"Jenkins Tuleap Authentication Plugin non-constant time token comparison","description":"Jenkins Tuleap Authentication Plugin 1.1.20 and earlier uses a non-constant time comparison function when validating an authentication token allowing attackers to use statistical methods to obtain a valid authentication token.","severity":{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00591,"percentile":0.48592,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-203"],"published":"2023-08-16T14:32:53Z","modified":"2026-06-17T06:17:19Z","fixes":[{"ecosystem":"Maven","package":"io.jenkins.plugins:tuleap-oauth","fixed_in":["1.1.21"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"io.jenkins.plugins:tuleap-oauth","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.21"}]}]},{"source":"osv","ecosystem":"Maven","package":"io.jenkins.plugins:tuleap-oauth","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.21"}]}],"versions":["1.0.0","1.1.0","1.1.1","1.1.10","1.1.11","1.1.12","1.1.13","1.1.14","1.1.15","1.1.16","1.1.17","1.1.18","1.1.19","1.1.20","1.1.3","1.1.4","1.1.5","1.1.6","1.1.7","1.1.9"]}],"products":[{"vendor":"jenkins","product":"tuleap_authentication"},{"vendor":"jenkins project","product":"jenkins tuleap authentication plugin"}],"references":[{"url":"https://www.jenkins.io/security/advisory/2023-08-16/#SECURITY-3229","tags":["vendor-advisory","x_transferred","Vendor Advisory","web"]},{"url":"http://www.openwall.com/lists/oss-security/2023/08/16/3","tags":["x_transferred","Mailing List","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-40343","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-5r33-mgjf-6656"}],"sources":{"cve":[{"id":"CVE-2023-40343","description":"Jenkins Tuleap Authentication Plugin 1.1.20 and earlier uses a non-constant time comparison function when validating an authentication token allowing attackers to use statistical methods to obtain a valid authentication token.","status":"published","published":"2023-08-16T14:32:53.909Z","modified":"2024-10-08T18:30:49.93Z","updated_at":"2026-11-02T14:35:21.971258Z"}],"euvd":[{"id":"EUVD-2023-2218","description":"Jenkins Tuleap Authentication Plugin 1.1.20 and earlier uses a non-constant time comparison function when validating an authentication token allowing attackers to use statistical methods to obtain a valid authentication token.","status":"published","published":"2023-08-16T14:32:53Z","modified":"2024-10-08T18:30:49Z","cvss":[{"version":"","score":0,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"none"}],"updated_at":"2026-11-03T00:27:44.844048Z"}],"ghsa":[{"id":"GHSA-5r33-mgjf-6656","title":"Jenkins Tuleap Authentication Plugin non-constant time token comparison","description":"Jenkins Tuleap Authentication Plugin 1.1.20 and earlier does not use a constant-time comparison when checking whether two authentication tokens are equal.\n\nThis could potentially allow attackers to use statistical methods to obtain a valid authentication token.\n\nTuleap Authentication Plugin 1.1.21 uses a constant-time comparison when validating authentication tokens.","status":"published","published":"2023-08-16T15:30:18Z","modified":"2023-11-11T05:07:42Z","cvss":[{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"low"}],"cwes":["CWE-203"],"updated_at":"2026-11-02T14:37:21.209096Z"}],"nvd":[{"id":"CVE-2023-40343","description":"Jenkins Tuleap Authentication Plugin 1.1.20 and earlier uses a non-constant time comparison function when validating an authentication token allowing attackers to use statistical methods to obtain a valid authentication token.","status":"published","published":"2023-08-16T15:15:11.817Z","modified":"2026-06-17T06:17:19.667Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-203"],"updated_at":"2026-11-02T14:08:24.487686Z"}],"osv":[{"id":"GHSA-5r33-mgjf-6656","title":"Jenkins Tuleap Authentication Plugin non-constant time token comparison","description":"Jenkins Tuleap Authentication Plugin 1.1.20 and earlier does not use a constant-time comparison when checking whether two authentication tokens are equal.\n\nThis could potentially allow attackers to use statistical methods to obtain a valid authentication token.\n\nTuleap Authentication Plugin 1.1.21 uses a constant-time comparison when validating authentication tokens.","status":"published","published":"2023-08-16T15:30:18Z","modified":"2024-02-16T08:20:31.882254Z","cvss":[{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"low"}],"cwes":["CWE-203"],"updated_at":"2026-11-02T15:46:38.553953Z"}]}}