Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-12910
GitLab GitLab — Missing Authentication for Critical Function in GitLab
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L L N U L L N 5.4 .0019 7.7 —
AFFECTED
Product Versions Fixed
GitLab 18.6 – —
TIMELINE
Jun 22 Reserved by GitLab
Sep 15 Published (CNA: GitLab)
Sep 19 EXPLOIT PUBLISHED — CVE-2026-12910 (GitLab). Public exploit reference added.
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| June 22, 2026 | Reserved | Reserved by GitLab |
| September 15, 2026 | Published | Published (CNA: GitLab) |
| September 19, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-12910 (GitLab). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| GitLab | GitLab | — | 18.6 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-12910 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.