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.
Advisories

No advisories yet.

Fixes

Solution

Upgrade to versions 18.7.6, 18.8.6, 18.9.2 or above.


Workaround

No workaround given by the vendor.

History

Wed, 11 Mar 2026 16:15:00 +0000

Type Values Removed Values Added
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.
Title Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
First Time appeared Gitlab
Gitlab gitlab
Weaknesses CWE-79
CPEs cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
Vendors & Products Gitlab
Gitlab gitlab
References
Metrics cvssV3_1

{'score': 8.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitLab

Published:

Updated: 2026-03-11T16:05:05.863Z

Reserved: 2026-01-16T21:03:59.336Z

Link: CVE-2026-1090

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-11T16:16:22.340

Modified: 2026-03-11T16:16:22.340

Link: CVE-2026-1090

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses