Auth bypass in GitLab
CVE-2023-5600
An issue has been discovered in GitLab EE affecting all versions starting from 16.0 before 16.3.6, all versions starting from 16.4 before 16.4.2, all versions starting from 16.5 before 16.5.1. Arbitrary access to the titles of an private specific references could be leaked through the service-desk custom email template.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (17.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 17.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.000
Affected products
- GitLab — versions 16.4, 16.5.0, 16.5
Weakness classification (CWE)
References
- gitlab.com/gitlab-org/gitlab/-/issues/428268 (issue-tracking, Exploit, permissions-required, Issue Tracking)
- hackerone.com/reports/2209702 (Permissions Required, technical-description, permissions-required, exploit)
Frequently asked questions
- What is CVE-2023-5600?
- CVE-2023-5600 is a low-severity vulnerability in GitLab, classified under Missing Authorization. CVSS score: 3.1/10. Published 2025-06-20.
- How severe is CVE-2023-5600?
- Low severity. CVSS v3 base score is 3.1 out of 10.