Auth bypass in GitLab

CVE-2026-8144

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.1 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an authenticated user with project membership to enumerate private group members due to missing authorization checks.

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (20.1th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 20.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-8144: held from 0.002 to 0.003.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

  • GitLab — versions 15.1, 18.10, 18.11

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-8144?
CVE-2026-8144 is a medium-severity vulnerability in GitLab, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-05-14.
How severe is CVE-2026-8144?
Medium severity. CVSS v3 base score is 4.3 out of 10.