Unrated severityNVD Advisory· Published Aug 2, 2023· Updated Nov 20, 2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
CVE-2023-3500
Description
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.
Affected products
3- Range: >=10.0, <16.0.8 || >=16.1, <16.1.3 || >=16.2, <16.2.2
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
2- hackerone.com/reports/2010926mitretechnical-descriptionexploitpermissions-required
- gitlab.com/gitlab-org/gitlab/-/issues/416902mitreissue-trackingpermissions-required
News mentions
1- GitLab Security Release: 16.2.2, 16.1.3, and 16.0.8GitLab Security Releases · Aug 1, 2023