CVE-2026-0752

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.2 before 18.7.5, 18.8 before 18.8.5, and 18.9 before 18.9.1 that under certain circumstances, could have allowed an unauthenticated user to inject arbitrary scripts into the Mermaid sandbox UI.

CVSS v3 8.0 HIGH

8.0^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.6 / Impact : 5.8

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://about.gitlab.com/releases/2026/02/25/patch-release-gitlab-18-9-1-released/	Release Notes Vendor Advisory
https://gitlab.com/gitlab-org/gitlab/-/issues/585371	Broken Link
https://hackerone.com/reports/3473276	Permissions Required

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:gitlab:gitlab:::::community:::*
	cpe:2.3:a:gitlab:gitlab:::::enterprise:::*
	cpe:2.3:a:gitlab:gitlab:::::community:::*
	cpe:2.3:a:gitlab:gitlab:::::enterprise:::*
	cpe:2.3:a:gitlab:gitlab:18.9.0::::community:::
	cpe:2.3:a:gitlab:gitlab:18.9.0::::enterprise:::

History

28 Feb 2026, 00:44

Type	Values Removed	Values Added
References	~~() https://about.gitlab.com/releases/2026/02/25/patch-release-gitlab-18-9-1-released/ -~~	() https://about.gitlab.com/releases/2026/02/25/patch-release-gitlab-18-9-1-released/ - Release Notes, Vendor Advisory
References	~~() https://gitlab.com/gitlab-org/gitlab/-/issues/585371 -~~	() https://gitlab.com/gitlab-org/gitlab/-/issues/585371 - Broken Link
References	~~() https://hackerone.com/reports/3473276 -~~	() https://hackerone.com/reports/3473276 - Permissions Required
CPE		cpe:2.3:a:gitlab:gitlab:::::enterprise:::* cpe:2.3:a:gitlab:gitlab:18.9.0::::community::: cpe:2.3:a:gitlab:gitlab:::::community:::* cpe:2.3:a:gitlab:gitlab:18.9.0::::enterprise:::
First Time		Gitlab Gitlab gitlab

25 Feb 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-25 21:16

Updated : 2026-02-28 00:44

NVD link : CVE-2026-0752

Mitre link : CVE-2026-0752

CVE.ORG link : CVE-2026-0752

JSON object : View

Products Affected

gitlab

gitlab

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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