XSS in GitLab
CVE-2023-3500
An issue has been discovered in GitLab CE/EE affecting all versions starting from 10.0 before 16.0.8, all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. A reflected XSS was possible when creating specific PlantUML diagrams that allowed the attacker to perform arbitrary actions on behalf of victims.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.005 (42.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- GitLab — versions 10.0, 16.1, 16.2
Weakness classification (CWE)
References
- gitlab.com/gitlab-org/gitlab/-/issues/416902 (issue-tracking, permissions-required, Broken Link)
- hackerone.com/reports/2010926 (Permissions Required, technical-description, permissions-required, exploit)
Frequently asked questions
- What is CVE-2023-3500?
- CVE-2023-3500 is a medium-severity vulnerability in GitLab, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2023-08-02.
- How severe is CVE-2023-3500?
- Medium severity. CVSS v3 base score is 4.8 out of 10.