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CVE-2026-2973 Details

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.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.4 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-released/	[email protected]	Release NotesVendor Advisory
https://gitlab.com/gitlab-org/gitlab/-/work_items/591049	[email protected]	Broken Link
https://hackerone.com/reports/3566802	[email protected]	Permissions Required

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	[email protected]

Affected Products

Product	Versions
gitlab gitlab	>= 17.7.0, < 18.8.7 >= 18.9.0, < 18.9.3 18.10.0
CPE cpe:2.3:a:gitlab:gitlab:::::community:::* cpe:2.3:a:gitlab:gitlab:::::enterprise:::* cpe:2.3:a:gitlab:gitlab:18.10.0::::community::: cpe:2.3:a:gitlab:gitlab:18.10.0::::enterprise::: Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Mar 26, 2026	Initial Analysis	[email protected]
Mar 25, 2026	New CVE Received	[email protected]