Auth bypass in Gitlab

CVE-2023-4532

An issue has been discovered in GitLab affecting all versions starting from 16.2 before 16.2.8, all versions starting from 16.3 before 16.3.5, all versions starting from 16.4 before 16.4.1. Users were capable of linking CI/CD jobs of private projects which they are not a member of.

Vulnerability class: Broken Access Control

EPSS: 0.004 (36.1th percentile) — read the EPSS interpretation.

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.

Affected products

  • Gitlab — versions 16.4, 16.4.0, 16.2

Weakness classification (CWE)

References

  • cve@gitlab.com (issue-tracking, permissions-required, Broken Link)
  • cve@gitlab.com (Permissions Required, technical-description, permissions-required, exploit)

Frequently asked questions

What is CVE-2023-4532?
CVE-2023-4532 is a medium-severity vulnerability in Gitlab, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2023-09-29.
How severe is CVE-2023-4532?
Medium severity. CVSS v3 base score is 4.3 out of 10.