CVE-2026-12910 — Missing Authentication for Critical Function in GitLab

CVE-2026-12910

Missing Authentication for Critical Function in GitLab PUBLISHED

Description (CNA)

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 (CNA)

Vendor / product	Versions
GitLab / GitLab	affected 18.6 before 19.1.8; affected 19.2 before 19.2.6; affected 19.3 before 19.3.2

CWE

CWE-306

References

https://gitlab.com/gitlab-org/gitlab/-/work_items/603742
https://hackerone.com/reports/3745561

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.