GitLabCVE-2026-12910
GitLab: missing authentication
Medium5.4CVE-2026-12910 · Published Sep 15, 2026 · updated Sep 20, 2026
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 restrictions and authenticate without SSO due to missing authentication enforcement checks.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| GitLab Product | >= 18.6, < 19.1.8 | 19.1.8 |
| >= 19.2, < 19.2.6 | 19.2.6 | |
| >= 19.3, < 19.3.2 | 19.3.2 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-306
More GitLab advisories
All GitLab| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Sep 16 | GitLab: improper authorization | Medium4.3 | 19.1.8+2 more |
| Sep 16 | GitLab: denial of service | High7.5 | 19.1.8+2 more |
| Sep 16 | GitLab: race condition | Medium6.4 | 19.1.8+2 more |
| Sep 15 | GitLab: remote code execution | High8.5 | 19.1.8+2 more |
| Sep 15 | GitLab: improper authorization | Medium5.3 | 19.1.8+2 more |
| Sep 15 | GitLab: improper input validation | High7.7 | 19.1.8+2 more |