{"id":"CVE-2026-15723","title":"Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection') in GitLab","summary":"GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.1 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, when OmniAuth SAML and LDAP auto-linking were both enabled, an authenticated user could have …","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N","cvssSource":"cna","cwe":["CWE-90"],"vendor":"GitLab","product":"GitLab","affected":["GitLab >= 10.1 < 19.3.6","GitLab >= 19.4 < 19.4.3","GitLab >= 19.5 < 19.5.1"],"published":"2026-10-21","updated":"2026-10-21","sourceUpdated":"2026-10-21T23:35:15.434Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-15723","references":[{"url":"https://gitlab.com/gitlab-org/gitlab/-/work_items/605977"},{"url":"https://hackerone.com/reports/3852192","label":"HackerOne Bug Bounty Report #3852192"},{"url":"https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released/"}],"tags":["cve.org"],"ingestedAt":"2026-10-22T00:21:21.865Z","slug":"CVE-2026-15723","body":"## Overview\n\nGitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.1 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, when OmniAuth SAML and LDAP auto-linking were both enabled, an authenticated user could have taken over an existing LDAP-backed account without any interaction from the targeted user, due to improper input sanitization in the LDAP email lookup path used during OmniAuth identity linking.\n\n## Affected\n\n- `GitLab >= 10.1 < 19.3.6`\n- `GitLab >= 19.4 < 19.4.3`\n- `GitLab >= 19.5 < 19.5.1`\n\n## Remediation\n\nUpgrade to versions 19.3.6, 19.4.3, 19.5.1 or above.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}