{"id":"CVE-2020-2228","aliases":["EUVD-2022-5014","GHSA-qq38-mxpq-rrpj"],"status":"published","title":"Improper authorization of users and groups with the same base name in Jenkins GitLab Authentication Plugin","description":"Jenkins Gitlab Authentication Plugin 1.5 and earlier does not perform group authorization checks properly, resulting in a privilege escalation vulnerability.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01433,"percentile":0.73252,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-863"],"published":"2020-07-15T17:00:29Z","modified":"2026-10-24T10:30:51Z","fixes":[{"ecosystem":"Maven","package":"org.jenkins-ci.plugins:gitlab-oauth","fixed_in":["1.6"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.jenkins-ci.plugins:gitlab-oauth","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.5"},{"fixed":"1.6"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.jenkins-ci.plugins:gitlab-oauth","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6"}]}],"versions":["1.0.3","1.0.4","1.0.5","1.0.6","1.0.7","1.0.8","1.0.9","1.1","1.2","1.3","1.4","1.5"]}],"products":[{"vendor":"jenkins","product":"gitlab_authentication"},{"vendor":"jenkins project","product":"jenkins gitlab authentication plugin"}],"references":[{"url":"https://jenkins.io/security/advisory/2020-07-15/#SECURITY-1792","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","web"]},{"url":"http://www.openwall.com/lists/oss-security/2020/07/15/5","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-2228","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-qq38-mxpq-rrpj"},{"url":"https://github.com/jenkinsci/gitlab-oauth-plugin","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2020-2228","description":"Jenkins Gitlab Authentication Plugin 1.5 and earlier does not perform group authorization checks properly, resulting in a privilege escalation vulnerability.","status":"published","published":"2020-07-15T17:00:29Z","modified":"2024-08-04T07:01:41.088Z","updated_at":"2026-11-02T14:35:51.563355Z"}],"euvd":[{"id":"EUVD-2022-5014","description":"Jenkins Gitlab Authentication Plugin 1.5 and earlier does not perform group authorization checks properly, resulting in a privilege escalation vulnerability.","status":"published","published":"2020-07-15T17:00:29Z","modified":"2024-08-04T07:01:41Z","updated_at":"2026-11-03T03:08:09.929524Z"}],"ghsa":[{"id":"GHSA-qq38-mxpq-rrpj","title":"Improper authorization of users and groups with the same base name in Jenkins GitLab Authentication Plugin","description":"GitLab Authentication Plugin 1.5 and earlier does not differentiate between user names and hierarchical group names when performing authorization. This allows an attacker with permissions to create groups in GitLab to gain the privileges granted to another user or group.\n\nGitLab Authentication Plugin 1.6 performs user name and group name authorization checks using the appropriate GitLab APIs.","status":"published","published":"2022-05-24T17:23:39Z","modified":"2023-01-28T05:06:31Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:36:25.064927Z"}],"nvd":[{"id":"CVE-2020-2228","description":"Jenkins Gitlab Authentication Plugin 1.5 and earlier does not perform group authorization checks properly, resulting in a privilege escalation vulnerability.","status":"published","published":"2020-07-15T18:15:37.597Z","modified":"2026-06-17T03:12:01.937Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:06:10.086163Z"}],"osv":[{"id":"CVE-2020-2228","description":"Jenkins Gitlab Authentication Plugin 1.5 and earlier does not perform group authorization checks properly, resulting in a privilege escalation vulnerability.","status":"published","published":"2020-07-15T18:15:37.597Z","modified":"2026-10-24T10:30:51.1449657Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:15.534837Z"},{"id":"GHSA-qq38-mxpq-rrpj","title":"Improper authorization of users and groups with the same base name in Jenkins GitLab Authentication Plugin","description":"GitLab Authentication Plugin 1.5 and earlier does not differentiate between user names and hierarchical group names when performing authorization. This allows an attacker with permissions to create groups in GitLab to gain the privileges granted to another user or group.\n\nGitLab Authentication Plugin 1.6 performs user name and group name authorization checks using the appropriate GitLab APIs.","status":"published","published":"2022-05-24T17:23:39Z","modified":"2023-11-08T04:02:58.434078Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T15:46:54.760124Z"}]}}