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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3cpe: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
Vulnerability mechanics
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