CVE-2026-12910
Medium
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.
SeverityMedium
CVSS5.4
Exploit probability—
Product
Gitlab
PublishedSep 15, 2026
First seenSep 15, 2026
Weakness typeCWE-306Missing authentication for critical function
How to fix
Update
- gitlab gitlab19.1.8, 19.2.6, 19.3.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gitlab gitlab | 18.6.0 ≤ v < 19.1.8, 19.2.0 ≤ v < 19.2.6, 19.3.0 ≤ v < 19.3.2 | 19.1.8, 19.2.6, 19.3.2 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.