{"id":"CVE-2026-1751","aliases":["BIT-gitlab-2026-1751","EUVD-2026-5136","GHSA-3735-4fjf-vq4q","UBUNTU-CVE-2026-1751"],"status":"published","title":"Missing Authorization in GitLab","description":"A vulnerability has been discovered in GitLab CE/EE affecting all versions starting with 16.8 before 18.5.0 that could have allowed unauthorized edits to merge request approval rules under certain conditions.","severity":{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00239,"percentile":0.1507,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-862"],"published":"2026-02-02T09:04:38Z","modified":"2026-10-28T02:30:35Z","fixes":[{"ecosystem":"Bitnami","package":"gitlab","fixed_in":["18.5.0"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"gitlab","ranges":[{"type":"SEMVER","events":[{"introduced":"16.8.0"},{"fixed":"18.5.0"}]}]},{"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/519340","tags":["issue-tracking","permissions-required","Exploit","Issue Tracking","Vendor Advisory","advisory","report"]},{"url":"https://hackerone.com/reports/2980839","tags":["technical-description","exploit","permissions-required","Permissions Required","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-1751","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-3735-4fjf-vq4q"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/1xxx/CVE-2026-1751.json","tags":["advisory"]},{"url":"git://git@gitlab.com:gitlab-org/gitlab.git","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2026-1751","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-1751","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-1751","title":"Missing Authorization in GitLab","description":"A vulnerability has been discovered in GitLab CE/EE affecting all versions starting with 16.8 before 18.5.0 that could have allowed unauthorized edits to merge request approval rules under certain 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