{"id":"CVE-2026-1747","aliases":["BIT-gitlab-2026-1747","EUVD-2026-8724","GHSA-289q-cmj5-r43x","UBUNTU-CVE-2026-1747"],"status":"published","title":"Authentication Bypass Using an Alternate Path or Channel in GitLab","description":"GitLab has remediated an issue in GitLab EE affecting all versions from 17.11 before 18.7.5, 18.8 before 18.8.5, and 18.9 before 18.9.1 that, under certain conditions, could have allowed Developer-role users with insufficient privileges to make unauthorized modifications to protected Conan packages.","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00268,"percentile":0.19153,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-288"],"published":"2026-02-25T20:04:49Z","modified":"2026-10-30T10:47:17Z","fixes":[{"ecosystem":"Bitnami","package":"gitlab","fixed_in":["18.7.5","18.8.5","18.9.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"gitlab","ranges":[{"type":"SEMVER","events":[{"introduced":"17.11.0"},{"fixed":"18.7.5"},{"introduced":"18.8.0"},{"fixed":"18.8.5"},{"introduced":"18.9.0"},{"fixed":"18.9.1"}]}]},{"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/-/issues/588385","tags":["issue-tracking","permissions-required","Broken Link","web","report"]},{"url":"https://hackerone.com/reports/3533088","tags":["technical-description","exploit","permissions-required","Permissions Required","web","report"]},{"url":"https://about.gitlab.com/releases/2026/02/25/patch-release-gitlab-18-9-1-released/","tags":["Release Notes","Vendor Advisory","advisory","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-1747","tags":["web","advisory"]},{"url":"https://about.gitlab.com/releases/2026/02/25/patch-release-gitlab-18-9-1-released"},{"url":"https://github.com/advisories/GHSA-289q-cmj5-r43x"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/1xxx/CVE-2026-1747.json","tags":["advisory"]},{"url":"git://git@gitlab.com:gitlab-org/gitlab.git","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2026-1747","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-1747","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-1747","title":"Authentication Bypass Using an Alternate Path 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packages.","status":"published","published":"2026-02-25T20:04:49Z","modified":"2026-02-26T15:39:03Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T19:48:26.495238Z"}],"ghsa":[{"id":"GHSA-289q-cmj5-r43x","title":"GitLab has remediated an issue in GitLab EE affecting all versions from 17.11 before 18.7.5, 18.8...","description":"GitLab has remediated an issue in GitLab EE affecting all versions from 17.11 before 18.7.5, 18.8 before 18.8.5, and 18.9 before 18.9.1 that, under certain conditions, could have allowed Developer-role users with insufficient privileges to make unauthorized modifications to protected Conan packages.","status":"published","published":"2026-02-25T21:31:19Z","modified":"2026-02-25T21:31:25Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-288"],"updated_at":"2026-11-02T15:06:22.774985Z"}],"nvd":[{"id":"CVE-2026-1747","description":"GitLab has remediated an issue in GitLab EE affecting all versions from 17.11 before 18.7.5, 18.8 before 18.8.5, and 18.9 before 18.9.1 that, under certain conditions, could have allowed Developer-role users with insufficient privileges to make unauthorized modifications to protected Conan packages.","status":"published","published":"2026-02-25T21:16:36.993Z","modified":"2026-06-17T10:16:26.953Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-288"],"updated_at":"2026-11-02T14:12:07.027269Z"}],"osv":[{"id":"CVE-2026-1747","title":"Authentication Bypass Using an Alternate Path or Channel in GitLab","description":"GitLab has remediated an issue in GitLab EE affecting all versions from 17.11 before 18.7.5, 18.8 before 18.8.5, and 18.9 before 18.9.1 that, under certain conditions, could have allowed Developer-role users with insufficient privileges to make unauthorized modifications to protected Conan packages.","status":"published","published":"2026-02-25T20:04:49.893Z","modified":"2026-10-30T10:47:17.959346009Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-288"],"updated_at":"2026-11-02T15:44:57.682091Z"},{"id":"UBUNTU-CVE-2026-1747","description":"GitLab has remediated an issue in GitLab EE affecting all versions from 17.11 before 18.7.5, 18.8 before 18.8.5, and 18.9 before 18.9.1 that, under certain conditions, could have allowed Developer-role users with insufficient privileges to make unauthorized modifications to protected Conan packages.","status":"published","published":"2026-02-25T21:16:00Z","modified":"2026-03-05T12:28:44Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T16:56:00.592716Z"},{"id":"BIT-gitlab-2026-1747","title":"Authentication Bypass Using an Alternate Path or Channel in GitLab","description":"GitLab has remediated an issue in GitLab EE affecting all versions from 17.11 before 18.7.5, 18.8 before 18.8.5, and 18.9 before 18.9.1 that, under certain conditions, could have allowed Developer-role users with insufficient privileges to make unauthorized modifications to protected Conan packages.","status":"published","published":"2026-03-02T09:08:43.992Z","modified":"2026-09-08T08:47:45.9133931Z","updated_at":"2026-11-02T15:28:30.70064Z"}]}}