CVE-2026-2973

MediumCVSS 5.4/10Last modified Jun 17, 2026

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.7 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an authenticated user to execute arbitrary JavaScript in a user's browser due to improper sanitization of entity-encoded content in Mermaid diagrams.

Metrics

CVSS 3.1 5.4/10CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

Vendor	Product	Versions
GitLab	GitLab	>= 17.7, < 18.8.7; >= 18.9, < 18.9.3; >= 18.10, < 18.10.1

References

https://about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-released/Release Notes, Vendor Advisory
https://gitlab.com/gitlab-org/gitlab/-/work_items/591049Broken Link
https://hackerone.com/reports/3566802Permissions Required

Timeline

Published: Mar 25, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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