{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-4916","assignerOrgId":"ceab7361-8a18-47b1-92ba-4d7d25f6715a","state":"PUBLISHED","assignerShortName":"GitLab","dateReserved":"2026-03-26T17:33:30.367Z","datePublished":"2026-04-08T22:25:22.837Z","dateUpdated":"2026-04-09T13:05:54.501Z"},"containers":{"cna":{"title":"Missing Authorization in GitLab","descriptions":[{"lang":"en","value":"GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that could have allowed an authenticated user with custom role permissions to demote or remove higher-privileged group members due to improper authorization checks on member management operations."}],"affected":[{"vendor":"GitLab","product":"GitLab","repo":"git://git@gitlab.com:gitlab-org/gitlab.git","cpes":["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"],"versions":[{"version":"18.2","status":"affected","lessThan":"18.8.9","versionType":"semver"},{"version":"18.9","status":"affected","lessThan":"18.9.5","versionType":"semver"},{"version":"18.10","status":"affected","lessThan":"18.10.3","versionType":"semver"}],"defaultStatus":"unaffected"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-862: Missing Authorization","cweId":"CWE-862","type":"CWE"}]}],"references":[{"url":"https://hackerone.com/reports/3301240","name":"HackerOne Bug Bounty Report #3301240","tags":["technical-description","exploit","permissions-required"]},{"url":"https://gitlab.com/gitlab-org/gitlab/-/work_items/565414"},{"url":"https://about.gitlab.com/releases/2026/04/08/patch-release-gitlab-18-10-3-released/"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":2.7,"baseSeverity":"LOW"}}],"solutions":[{"lang":"en","value":"Upgrade to versions 18.8.9, 18.9.5, 18.10.3 or above."}],"credits":[{"lang":"en","value":"Thanks [theluci](https://hackerone.com/theluci) for reporting this vulnerability through our HackerOne bug bounty program","type":"finder"}],"providerMetadata":{"orgId":"ceab7361-8a18-47b1-92ba-4d7d25f6715a","shortName":"GitLab","dateUpdated":"2026-04-08T22:25:22.837Z"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-09T13:05:47.114773Z","id":"CVE-2026-4916","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-04-09T13:05:54.501Z"}}]}}