Auth bypass in GitLab

CVE-2023-4379

An issue has been discovered in GitLab EE affecting all versions starting from 15.3 prior to 16.2.8, 16.3 prior to 16.3.5, and 16.4 prior to 16.4.1. Code owner approval was not removed from merge requests when the target branch was updated.

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.005 (40.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.5% 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-2023-4379: held from 0.005 to 0.005.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

  • GitLab — versions 16.4, 15.3, 16.4.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2023-4379?
CVE-2023-4379 is a high-severity vulnerability in GitLab, classified under Incorrect Authorization. CVSS score: 8.1/10. Published 2023-11-09.
How severe is CVE-2023-4379?
High severity. CVSS v3 base score is 8.1 out of 10.