CVE-2026-12910

Published: Sep 15, 2026Modified: Sep 28, 2026

5.4

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Exploitability: 2.8 / Impact: 2.5

Source: cve@gitlab.com (Secondary)

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 (6)

Products: Gitlab: Gitlab

Gitlab

1 product

Gitlab

Configuration A

6 vulnerable

Vulnerable Software	Affected Versions
Gitlab Gitlab	18.6.0 ≤ version < 19.1.8
Gitlab Gitlab	19.2.0 ≤ version < 19.2.6
Gitlab Gitlab	19.3.0 ≤ version < 19.3.2
Gitlab Gitlab	18.6.0 ≤ version < 19.1.8
Gitlab Gitlab	19.2.0 ≤ version < 19.2.6
Gitlab Gitlab	19.3.0 ≤ version < 19.3.2

Related CWEs

CWE-306

Missing Authentication for Critical Function

The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

References (2)

https://gitlab.com/gitlab-org/gitlab/-/work_items/603742

Source: cve@gitlab.com

Broken Link

https://hackerone.com/reports/3745561

Source: cve@gitlab.com

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Timeline

No history available yet.