GitLab up to 19.1.7/19.2.5/19.3.1 Content Editor cross site scripting

Summaryinfo

A vulnerability categorized as problematic has been discovered in GitLab up to 19.1.7/19.2.5/19.3.1. Affected by this vulnerability is an unknown functionality of the component Content Editor. The manipulation results in cross site scripting. This vulnerability is cataloged as CVE-2026-19619. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in GitLab up to 19.1.7/19.2.5/19.3.1. Affected is an unknown functionality of the component Content Editor. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity. CVE summarizes:

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.0 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that under certain conditions could have allowed an unauthenticated user to execute arbitrary JavaScript in the context of a targeted user's session due to improper sanitization of pasted HTML content in the Content Editor.

The advisory is shared for download at gitlab.com. This vulnerability is traded as CVE-2026-19619 since 08/12/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 19.1.8, 19.2.6 or 19.3.2 eliminates this vulnerability.

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Productinfo

Type

• Bug Tracking Software

Name

• GitLab

Version

• 19.1.0
• 19.1.1
• 19.1.2
• 19.1.3
• 19.1.4
• 19.1.5
• 19.1.6
• 19.1.7
• 19.2.0
• 19.2.1
• 19.2.2
• 19.2.3
• 19.2.4
• 19.2.5
• 19.3.0
• 19.3.1

License

• open-source

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