CVE-2026-0752

Severity CVSS v4.0:

Pending analysis

Type:

CWE-79 Cross-Site Scripting (XSS)

Publication date:

25/02/2026

Last modified:

28/02/2026

Description

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 8.00 HIGH
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Changed
Confidentiality (C): High
Integrity (I): High
Availability (A): None

Base Score 3.x

8.00

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:gitlab:gitlab:::::community:::*	16.2.0 (including)	18.7.5 (excluding)
cpe:2.3:a:gitlab:gitlab:::::enterprise:::*	16.2.0 (including)	18.7.5 (excluding)
cpe:2.3:a:gitlab:gitlab:::::community:::*	18.8.0 (including)	18.8.5 (excluding)
cpe:2.3:a:gitlab:gitlab:::::enterprise:::*	18.8.0 (including)	18.8.5 (excluding)
cpe:2.3:a:gitlab:gitlab:18.9.0::::community:::
cpe:2.3:a:gitlab:gitlab:18.9.0::::enterprise:::

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-0752

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools