{"id":"CVE-2023-3900","aliases":["BIT-gitlab-2023-3900","EUVD-2023-44526","GHSA-mr7p-gv96-xc44","UBUNTU-CVE-2023-3900"],"status":"published","title":"Improper Validation of Specified Type of Input in GitLab","description":"An issue has been discovered in GitLab CE/EE affecting all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. An invalid 'start_sha' value on merge requests page may lead to Denial of Service as Changes tab would not load.","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00918,"percentile":0.60479,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1287","CWE-20"],"published":"2023-08-02T00:07:05Z","modified":"2026-10-30T10:46:36Z","fixes":[{"ecosystem":"Bitnami","package":"gitlab","fixed_in":["16.1.3","16.2.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"gitlab","ranges":[{"type":"SEMVER","events":[{"introduced":"16.1.0"},{"fixed":"16.1.3"},{"introduced":"16.2.0"},{"fixed":"16.2.2"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"gitlab","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["8.4.3+dfsg-9","8.4.3+dfsg-12","8.5.8+dfsg-5"]}],"products":[{"vendor":"gitlab","product":"gitlab"}],"references":[{"url":"https://gitlab.com/gitlab-org/gitlab/-/issues/418770","tags":["issue-tracking","x_transferred","Broken Link","web","report"]},{"url":"https://hackerone.com/reports/2058514","tags":["technical-description","exploit","permissions-required","x_transferred","Permissions Required","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-3900","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-mr7p-gv96-xc44"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/3xxx/CVE-2023-3900.json","tags":["advisory"]},{"url":"git://git@gitlab.com:gitlab-org/gitlab.git","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2023-3900","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-3900","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2023-3900","title":"Improper Validation of Specified Type of Input in GitLab","description":"An issue has been discovered in GitLab CE/EE affecting all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. An invalid 'start_sha' value on merge requests page may lead to Denial of Service as Changes tab would not load.","status":"published","published":"2023-08-02T00:07:05.231Z","modified":"2025-11-20T04:08:08.254Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-1287"],"updated_at":"2026-11-02T14:35:24.707957Z"}],"euvd":[{"id":"EUVD-2023-44526","description":"An issue has been discovered in GitLab CE/EE affecting all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. An invalid 'start_sha' value on merge requests page may lead to Denial of Service as Changes tab would not load.","status":"published","published":"2023-08-02T00:07:05Z","modified":"2025-11-20T04:08:08Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T19:49:15.042838Z"}],"ghsa":[{"id":"GHSA-mr7p-gv96-xc44","title":"An issue has been discovered in GitLab CE/EE affecting all versions starting from 16.1 before 16...","description":"An issue has been discovered in GitLab CE/EE affecting all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. An invalid 'start_sha' value on merge requests page may lead to Denial of Service as Changes tab would not load.","status":"published","published":"2023-08-02T03:30:20Z","modified":"2024-10-03T09:31:40Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-20","CWE-1287"],"updated_at":"2026-11-02T14:58:24.112371Z"}],"nvd":[{"id":"CVE-2023-3900","description":"An issue has been discovered in GitLab CE/EE affecting all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. An invalid 'start_sha' value on merge requests page may lead to Denial of Service as Changes tab would not load.","status":"published","published":"2023-08-02T01:15:09.607Z","modified":"2026-06-17T06:15:17.37Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","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:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-1287"],"updated_at":"2026-11-02T14:08:18.687088Z"}],"osv":[{"id":"CVE-2023-3900","title":"Improper Validation of Specified Type of Input in GitLab","description":"An issue has been discovered in GitLab CE/EE affecting all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. An invalid 'start_sha' value on merge requests page may lead to Denial of Service as Changes tab would not load.","status":"published","published":"2023-08-02T00:07:05.231Z","modified":"2026-10-30T10:46:36.260979708Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-1287"],"updated_at":"2026-11-02T15:44:32.922049Z"},{"id":"UBUNTU-CVE-2023-3900","description":"An issue has been discovered in GitLab CE/EE affecting all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. An invalid 'start_sha' value on merge requests page may lead to Denial of Service as Changes tab would not load.","status":"published","published":"2023-08-02T01:15:00Z","modified":"2025-10-24T05:01:27Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T16:54:21.882004Z"},{"id":"BIT-gitlab-2023-3900","title":"Improper Validation of Specified Type of Input in GitLab","description":"An issue has been discovered in GitLab CE/EE affecting all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. An invalid 'start_sha' value on merge requests page may lead to Denial of Service as Changes tab would not load.","status":"published","published":"2024-03-06T11:03:40.193Z","modified":"2025-05-20T10:02:07.006Z","updated_at":"2026-11-02T15:28:30.405543Z"}]}}