{"id":"CVE-2026-5173","aliases":["BIT-gitlab-2026-5173","EUVD-2026-20802","GHSA-5gj7-3j23-w2h2","UBUNTU-CVE-2026-5173"],"status":"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.","severity":{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00433,"percentile":0.37902,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-749"],"published":"2026-04-08T22:25:12Z","modified":"2026-10-30T10:30:56Z","exploits":[{"source":"pocgithub","id":"ashrafzaryouh/CVE-2026-5173","title":"ashrafzaryouh/CVE-2026-5173","date":"2026-04-09","url":"https://github.com/ashrafzaryouh/CVE-2026-5173"}],"fixes":[{"ecosystem":"Bitnami","package":"gitlab","fixed_in":["18.8.9","18.9.5","18.10.3"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"gitlab","ranges":[{"type":"SEMVER","events":[{"introduced":"16.9.6"},{"fixed":"18.8.9"},{"introduced":"18.9.0"},{"fixed":"18.9.5"},{"introduced":"18.10.0"},{"fixed":"18.10.3"}]}]},{"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/-/work_items/588959","tags":["Broken Link","web","report"]},{"url":"https://about.gitlab.com/releases/2026/04/08/patch-release-gitlab-18-10-3-released/","tags":["Release Notes","Vendor Advisory","advisory","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5173","tags":["web","advisory"]},{"url":"https://about.gitlab.com/releases/2026/04/08/patch-release-gitlab-18-10-3-released"},{"url":"https://github.com/advisories/GHSA-5gj7-3j23-w2h2"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5173.json","tags":["advisory"]},{"url":"git://git@gitlab.com:gitlab-org/gitlab.git","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2026-5173","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-5173","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-5173","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.","status":"published","published":"2026-04-08T22:25:12.946Z","modified":"2026-04-09T13:16:53.628Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-749"],"updated_at":"2026-11-02T13:39:39.001586Z"}],"euvd":[{"id":"EUVD-2026-20802","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.","status":"published","published":"2026-04-08T22:25:12Z","modified":"2026-04-09T13:16:53Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","level":"high"}],"updated_at":"2026-11-02T19:24:31.230458Z"}],"ghsa":[{"id":"GHSA-5gj7-3j23-w2h2","title":"GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.9.6 before 18.8.9,...","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.","status":"published","published":"2026-04-09T00:32:01Z","modified":"2026-04-09T00:32:08Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","level":"high"}],"cwes":["CWE-749"],"updated_at":"2026-11-02T15:07:23.155154Z"}],"nvd":[{"id":"CVE-2026-5173","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.","status":"published","published":"2026-04-08T23:17:00.22Z","modified":"2026-07-24T20:10:00.147Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-749"],"updated_at":"2026-11-02T14:12:13.902911Z"}],"osv":[{"id":"CVE-2026-5173","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.","status":"published","published":"2026-04-08T22:25:12.946Z","modified":"2026-10-30T10:30:56.966833122Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","level":"high"}],"cwes":["CWE-749"],"updated_at":"2026-11-02T15:45:07.431113Z"},{"id":"UBUNTU-CVE-2026-5173","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.","status":"published","published":"2026-04-08T23:17:00Z","modified":"2026-04-16T09:12:29Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","level":"high"}],"updated_at":"2026-11-02T16:56:33.391918Z"},{"id":"BIT-gitlab-2026-5173","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.","status":"published","published":"2026-04-17T00:09:13.139Z","modified":"2026-09-08T08:47:46.212319459Z","updated_at":"2026-11-02T15:28:30.70064Z"}]}}