What is CVE-2023-6840?

CVE-2023-6840 is a medium-severity vulnerability in Gitlab, classified under Missing Authorization. CVSS score: 6.7/10. Published 2024-02-07.

How severe is CVE-2023-6840?

Medium severity. CVSS v3 base score is 6.7 out of 10.

Auth bypass in Gitlab

CVE-2023-6840

An issue has been discovered in GitLab EE affecting all versions from 16.4 prior to 16.6.7, 16.7 prior to 16.7.5, and 16.8 prior to 16.8.2 which allows a maintainer to change the name of a protected branch that bypasses the security policy added to block MR.

Vulnerability class: Broken Access Control

EPSS: 0.006 (43.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H.

Affected products

Gitlab — versions 16.4, 16.7, 16.8

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

cve@gitlab.com (Permissions Required, issue-tracking, permissions-required, Issue Tracking)
cve@gitlab.com (Technical Description, Permissions Required, technical-description, permissions-required, exploit)

Frequently asked questions

What is CVE-2023-6840?: CVE-2023-6840 is a medium-severity vulnerability in Gitlab, classified under Missing Authorization. CVSS score: 6.7/10. Published 2024-02-07.
How severe is CVE-2023-6840?: Medium severity. CVSS v3 base score is 6.7 out of 10.