CVE-2025-12734

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

11/12/2025

Last modified:

23/12/2025

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.6 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that could have allowed an authenticated user to, under certain conditions, render content in dialogs to other users by injecting malicious HTML content into merge request titles.

Impact

Vector 3.x

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

Base Score: 3.50 LOW
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

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

Base Score 3.x

3.50

Severity 3.x

LOW

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:gitlab:gitlab:::::community:::*	15.6.0 (including)	18.4.6 (excluding)
cpe:2.3:a:gitlab:gitlab:::::enterprise:::*	15.6.0 (including)	18.4.6 (excluding)
cpe:2.3:a:gitlab:gitlab:::::community:::*	18.5.0 (including)	18.5.4 (excluding)
cpe:2.3:a:gitlab:gitlab:::::enterprise:::*	18.5.0 (including)	18.5.4 (excluding)
cpe:2.3:a:gitlab:gitlab:::::community:::*	18.6.0 (including)	18.6.2 (excluding)
cpe:2.3:a:gitlab:gitlab:::::enterprise:::*	18.6.0 (including)	18.6.2 (excluding)

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

CVE-2025-12734

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools