{"id":"CVE-2026-1747","state":"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.","publishedAt":"2026-02-25T20:04:49.893Z","updatedAt":"2026-02-26T15:39:03.951Z","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":"17.11","status":"affected","lessThan":"18.7.5","versionType":"semver"},{"version":"18.8","status":"affected","lessThan":"18.8.5","versionType":"semver"},{"version":"18.9","status":"affected","lessThan":"18.9.1","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/588385","https://hackerone.com/reports/3533088","https://about.gitlab.com/releases/2026/02/25/patch-release-gitlab-18-9-1-released/"],"weaknesses":["CWE-288"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/1xxx/CVE-2026-1747.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-1747","state":"PUBLISHED","datePublished":"2026-02-25T20:04:49.893Z","dateUpdated":"2026-02-26T15:39:03.951Z","assignerShortName":"GitLab","assignerOrgId":"ceab7361-8a18-47b1-92ba-4d7d25f6715a","dateReserved":"2026-02-01T18:33:18.805Z"},"containers":{"cna":{"title":"Authentication Bypass Using an Alternate Path or Channel in GitLab","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"GitLab","product":"GitLab","defaultStatus":"unaffected","versions":[{"version":"17.11","status":"affected","lessThan":"18.7.5","versionType":"semver"},{"version":"18.8","status":"affected","lessThan":"18.8.5","versionType":"semver"},{"version":"18.9","status":"affected","lessThan":"18.9.1","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/588385","name":"GitLab Issue #588385","tags":["issue-tracking","permissions-required"]},{"url":"https://hackerone.com/reports/3533088","name":"HackerOne Bug Bounty Report #3533088","tags":["technical-description","exploit","permissions-required"]},{"url":"https://about.gitlab.com/releases/2026/02/25/patch-release-gitlab-18-9-1-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: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-288","lang":"en","description":"CWE-288: Authentication Bypass Using an Alternate Path or Channel","type":"CWE"}]}],"providerMetadata":{"shortName":"GitLab","orgId":"ceab7361-8a18-47b1-92ba-4d7d25f6715a","dateUpdated":"2026-02-25T20:04:49.893Z"},"solutions":[{"lang":"en","value":"Upgrade to versions 18.7.5, 18.8.5, 18.9.1 or above."}],"credits":[{"lang":"en","value":"Thanks [modhanami](https://hackerone.com/modhanami) for reporting this vulnerability through our HackerOne bug bounty program","type":"finder"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-26T15:38:24.259525Z","id":"CVE-2026-1747","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-02-26T15:39:03.951Z"}}]}}}