GitLab Community Edition/Enterprise Edition up to 18.4.5/18.5.3/18.6.1 cross site scripting

Summaryinfo

A vulnerability marked as problematic has been reported in GitLab Community Edition and Enterprise Edition up to 18.4.5/18.5.3/18.6.1. The impacted element is an unknown function. This manipulation causes cross site scripting. This vulnerability is registered as CVE-2025-12716. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in GitLab Community Edition and Enterprise Edition up to 18.4.5/18.5.3/18.6.1. It has been declared as problematic. Affected by this vulnerability is an unknown code. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.4 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that, under certain conditions could have allowed an authenticated user to perform unauthorized actions on behalf of another user by creating wiki pages with malicious content.

The weakness was published by yvvdwf as 579548. It is possible to read the advisory at gitlab.com. This vulnerability is known as CVE-2025-12716 since 11/04/2025. The exploitation appears to be easy. The attack can be launched remotely. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 298842 (GitLab 18.4 < 18.4.6 / 18.5 < 18.5.4 / 18.6 < 18.6.2 (CVE-2025-12716)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 18.4.6, 18.5.4 or 18.6.2 eliminates this vulnerability. The upgrade is hosted for download at about.gitlab.com.

The vulnerability is also documented in the databases at Tenable (298842), EUVD (EUVD-2025-202659) and CERT Bund (WID-SEC-2025-2822). Be aware that VulDB is the high quality source for vulnerability data.

Affected

• Open Source GitLab

Productinfo

Type

• Bug Tracking Software

Vendor

• GitLab

Name

• Community Edition
• Enterprise Edition

Version

• 18.4.0
• 18.4.1
• 18.4.2
• 18.4.3
• 18.4.4
• 18.4.5
• 18.5.0
• 18.5.1
• 18.5.2
• 18.5.3
• 18.6.0
• 18.6.1

License

• open-source

Website

• Vendor: https://gitlab.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

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