{"id":"CVE-2026-12910","title":"GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.6 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that under certain conditions could have allowed an authenticated user to bypass SAML SSO sign-in r…","summary":"GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.6 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that under certain conditions could have allowed an authenticated user to bypass SAML SSO sign-in r…","severity":"medium","cvss":5.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","cwe":["CWE-306"],"vendor":"gitlab","product":"gitlab","affected":["gitlab >= 18.6.0, < 19.1.8","gitlab >= 19.2.0, < 19.2.6","gitlab >= 19.3.0, < 19.3.2"],"patched":["gitlab 19.3.2"],"published":"2026-09-15","updated":"2026-09-28","sourceUpdated":"2026-09-28T20:04:41.633","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-12910","references":[{"url":"https://gitlab.com/gitlab-org/gitlab/-/work_items/603742","label":"cve@gitlab.com"},{"url":"https://hackerone.com/reports/3745561","label":"cve@gitlab.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-20T00:35:51.187199Z"},"ingestedAt":"2026-09-15T18:41:59.138Z","epss":0.0034,"epssPercentile":0.2728,"slug":"CVE-2026-12910","body":"## Overview\n\nGitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.6 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that under certain conditions could have allowed an authenticated user to bypass SAML SSO sign-in restrictions and authenticate without SSO due to missing authentication enforcement checks.\n\n## Affected\n\n- `gitlab >= 18.6.0, < 19.1.8`\n- `gitlab >= 19.2.0, < 19.2.6`\n- `gitlab >= 19.3.0, < 19.3.2`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `gitlab 19.3.2`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":29.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}