{"id":"CVE-2026-5173","state":"PUBLISHED","title":"Exposed Dangerous Method or Function in GitLab","description":"GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.9.6 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that could have allowed an authenticated user to invoke unintended server-side methods through websocket connections due to improper access control.","publishedAt":"2026-04-08T22:25:12.946Z","updatedAt":"2026-04-09T13:16:53.628Z","severity":{"score":8.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","source":"GitLab"},"assigner":"GitLab","products":["GitLab GitLab"],"affected":[{"vendor":"GitLab","product":"GitLab","defaultStatus":"unaffected","versions":[{"version":"16.9.6","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"}],"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/588959","https://about.gitlab.com/releases/2026/04/08/patch-release-gitlab-18-10-3-released/"],"weaknesses":["CWE-749"],"ingestedAt":"2026-10-29T20:12:32.778Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/5xxx/CVE-2026-5173.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-5173","state":"PUBLISHED","datePublished":"2026-04-08T22:25:12.946Z","dateUpdated":"2026-04-09T13:16:53.628Z","assignerShortName":"GitLab","assignerOrgId":"ceab7361-8a18-47b1-92ba-4d7d25f6715a","dateReserved":"2026-03-30T16:33:59.755Z"},"containers":{"cna":{"title":"Exposed Dangerous Method or Function in GitLab","descriptions":[{"lang":"en","value":"GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.9.6 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that could have allowed an authenticated user to invoke unintended server-side methods through websocket connections due to improper access control."}],"affected":[{"vendor":"GitLab","product":"GitLab","defaultStatus":"unaffected","versions":[{"version":"16.9.6","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"}],"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/588959"},{"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:L/UI:N/S:C/C:H/I:L/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":8.5,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-749","lang":"en","description":"CWE-749: Exposed Dangerous Method or Function","type":"CWE"}]}],"providerMetadata":{"shortName":"GitLab","orgId":"ceab7361-8a18-47b1-92ba-4d7d25f6715a","dateUpdated":"2026-04-08T22:25:12.946Z"},"solutions":[{"lang":"en","value":"Upgrade to versions 18.8.9, 18.9.5, 18.10.3 or above."}],"credits":[{"lang":"en","value":"This vulnerability has been discovered internally by GitLab team member Simon Tomlinson","type":"finder"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-09T13:16:45.655060Z","id":"CVE-2026-5173","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":"2026-04-09T13:16:53.628Z"}}]}}}