# CVE-2026-12910

## Summary

- **CVE ID:** CVE-2026-12910
- **Severity:** MEDIUM
- **CVSS Score:** 5.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N)
- **CWE:** CWE-306
- **Published:** Sep 15, 2026
- **Last Modified:** Sep 15, 2026

## Description

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 Products

- GitLab — GitLab (18.6)
- GitLab — GitLab (19.2)
- GitLab — GitLab (19.3)

## References

- [CNA](https://gitlab.com/gitlab-org/gitlab/-/work_items/603742)
- [CNA](https://hackerone.com/reports/3745561)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.32%
- **EPSS Percentile:** 25.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-19._