Unrated severityNVD Advisory· Published Mar 11, 2026· Updated Mar 12, 2026
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
CVE-2026-1090
Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.6 before 18.7.6, 18.8 before 18.8.6, and 18.9 before 18.9.2 that could have allowed an authenticated user, when the markdown_placeholders feature flag was enabled, to inject JavaScript in a browser due to improper sanitization of placeholder content in markdown processing.
Affected products
2cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*range: 10.6
- (no CPE)range: all versions from 10.6 before 18.7.6, 18.8 before 18.8.6, and 18.9 before 18.9.2
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
2- hackerone.com/reports/3502450mitretechnical-descriptionexploitpermissions-required
- about.gitlab.com/releases/2026/03/11/patch-release-gitlab-18-9-2-released/mitre
News mentions
1- GitLab Patch Release: 18.9.2, 18.8.6, 18.7.6GitLab Security Releases · Mar 11, 2026