CVE-2026-1090

HIGH

8.7

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.

CVE Details

CVSS v3.1 Score8.7

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionREQUIRED

Published3/11/2026

Last Modified3/13/2026

Sourcenvd

Honeypot Sightings0

Affected Products

gitlab:gitlab

Weaknesses (CWE)

CWE-79

References

https://about.gitlab.com/releases/2026/03/11/patch-release-gitlab-18-9-2-released/(cve@gitlab.com)

https://gitlab.com/gitlab-org/gitlab/-/work_items/586478(cve@gitlab.com)

https://hackerone.com/reports/3502450(cve@gitlab.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.