{"id":"CVE-2023-3920","state":"PUBLISHED","title":"Incorrect Authorization in GitLab","description":"An issue has been discovered in GitLab affecting all versions starting from 11.2 before 16.2.8, all versions starting from 16.3 before 16.3.5, all versions starting from 16.4 before 16.4.1. It was possible that a maintainer to create a fork relationship between existing projects contrary to the documentation.","publishedAt":"2023-09-29T06:02:31.303Z","updatedAt":"2026-08-14T04:11:54.961Z","severity":{"score":4.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","source":"GitLab"},"assigner":"GitLab","products":["GitLab GitLab"],"affected":[{"vendor":"GitLab","product":"GitLab","defaultStatus":"unaffected","versions":[{"version":"11.2","status":"affected","lessThan":"16.2.8","versionType":"semver"},{"version":"16.3","status":"affected","lessThan":"16.3.5","versionType":"semver"},{"version":"16.4","status":"affected","lessThan":"16.4.1","versionType":"semver"}],"repo":"git://git@gitlab.com:gitlab-org/gitlab.git","cpes":["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"]}],"references":["https://gitlab.com/gitlab-org/gitlab/-/issues/417481","https://hackerone.com/reports/2058121"],"weaknesses":["CWE-863"],"ingestedAt":"2026-10-29T20:06:08.715Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/3xxx/CVE-2023-3920.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-3920","state":"PUBLISHED","datePublished":"2023-09-29T06:02:31.303Z","dateUpdated":"2026-08-14T04:11:54.961Z","assignerShortName":"GitLab","assignerOrgId":"ceab7361-8a18-47b1-92ba-4d7d25f6715a","dateReserved":"2023-07-25T10:30:33.135Z"},"containers":{"cna":{"title":"Incorrect Authorization in GitLab","descriptions":[{"lang":"en","value":"An issue has been discovered in GitLab affecting all versions starting from 11.2 before 16.2.8, all versions starting from 16.3 before 16.3.5, all versions starting from 16.4 before 16.4.1. It was possible that a maintainer to create a fork relationship between existing projects contrary to the documentation."}],"affected":[{"vendor":"GitLab","product":"GitLab","defaultStatus":"unaffected","versions":[{"version":"11.2","status":"affected","lessThan":"16.2.8","versionType":"semver"},{"version":"16.3","status":"affected","lessThan":"16.3.5","versionType":"semver"},{"version":"16.4","status":"affected","lessThan":"16.4.1","versionType":"semver"}],"repo":"git://git@gitlab.com:gitlab-org/gitlab.git","cpes":["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"]}],"references":[{"url":"https://gitlab.com/gitlab-org/gitlab/-/issues/417481","name":"GitLab Issue #417481","tags":["issue-tracking"]},{"url":"https://hackerone.com/reports/2058121","name":"HackerOne Bug Bounty Report #2058121","tags":["technical-description","exploit","permissions-required","broken-link"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","lang":"en","description":"CWE-863: Incorrect Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitLab","orgId":"ceab7361-8a18-47b1-92ba-4d7d25f6715a","dateUpdated":"2026-08-14T04:11:54.961Z"},"solutions":[{"lang":"en","value":"Upgrade to version 16.4.1, 16.3.5, 16.2.8"}],"credits":[{"lang":"en","value":"Thanks [theluci](https://hackerone.com/theluci) for reporting this vulnerability through our HackerOne bug bounty program","type":"finder"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-07-24T18:28:54.700432Z","id":"CVE-2023-3920","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-07-24T18:29:02.167Z"}},{"title":"CVE Program Container","references":[{"url":"https://gitlab.com/gitlab-org/gitlab/-/issues/417481","name":"GitLab Issue #417481","tags":["issue-tracking","x_transferred"]},{"url":"https://hackerone.com/reports/2058121","name":"HackerOne Bug Bounty Report #2058121","tags":["technical-description","exploit","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T07:08:50.695Z"}}]}}}