{"id":"CVE-2026-6976","state":"PUBLISHED","title":"Authorization Bypass Through User-Controlled Key in GitLab","description":"GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.9 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user with developer-role permissions to hide changes from merge request diff views due to improper input handling of file names.","publishedAt":"2026-06-11T10:20:11.436Z","updatedAt":"2026-06-11T12:33:23.414Z","severity":{"score":3.7,"label":"Low","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","source":"GitLab"},"assigner":"GitLab","products":["GitLab GitLab"],"affected":[{"vendor":"GitLab","product":"GitLab","defaultStatus":"unaffected","versions":[{"version":"15.9","status":"affected","lessThan":"18.10.8","versionType":"semver"},{"version":"18.11","status":"affected","lessThan":"18.11.5","versionType":"semver"},{"version":"19.0","status":"affected","lessThan":"19.0.2","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/-/work_items/598165","https://hackerone.com/reports/3638136","https://about.gitlab.com/releases/2026/06/10/patch-release-gitlab-19-0-2-released/"],"weaknesses":["CWE-639"],"ingestedAt":"2026-10-29T20:12:49.727Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/6xxx/CVE-2026-6976.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-6976","state":"PUBLISHED","datePublished":"2026-06-11T10:20:11.436Z","dateUpdated":"2026-06-11T12:33:23.414Z","assignerShortName":"GitLab","assignerOrgId":"ceab7361-8a18-47b1-92ba-4d7d25f6715a","dateReserved":"2026-04-24T18:33:29.831Z"},"containers":{"cna":{"title":"Authorization Bypass Through User-Controlled Key in GitLab","descriptions":[{"lang":"en","value":"GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.9 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user with developer-role permissions to hide changes from merge request diff views due to improper input handling of file names."}],"affected":[{"vendor":"GitLab","product":"GitLab","defaultStatus":"unaffected","versions":[{"version":"15.9","status":"affected","lessThan":"18.10.8","versionType":"semver"},{"version":"18.11","status":"affected","lessThan":"18.11.5","versionType":"semver"},{"version":"19.0","status":"affected","lessThan":"19.0.2","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/-/work_items/598165"},{"url":"https://hackerone.com/reports/3638136","name":"HackerOne Bug Bounty Report #3638136","tags":["technical-description","exploit","permissions-required"]},{"url":"https://about.gitlab.com/releases/2026/06/10/patch-release-gitlab-19-0-2-released/"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":3.7,"baseSeverity":"LOW"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-639","lang":"en","description":"CWE-639: Authorization Bypass Through User-Controlled Key","type":"CWE"}]}],"providerMetadata":{"shortName":"GitLab","orgId":"ceab7361-8a18-47b1-92ba-4d7d25f6715a","dateUpdated":"2026-06-11T10:20:11.436Z"},"solutions":[{"lang":"en","value":"Upgrade to versions 18.10.8, 18.11.5, 19.0.2 or above."}],"credits":[{"lang":"en","value":"Thanks [xorz](https://hackerone.com/xorz) for reporting this vulnerability through our HackerOne bug bounty program","type":"finder"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-11T12:33:12.743514Z","id":"CVE-2026-6976","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":"2026-06-11T12:33:23.414Z"}}]}}}