GitLab up to 19.2.7/19.3.4/19.4.1 HTML Attributes HTML injection

Summaryinfo

A vulnerability was found in GitLab up to 19.2.7/19.3.4/19.4.1. It has been rated as problematic. This impacts an unknown function of the component HTML Attributes. Performing a manipulation results in HTML injection. This vulnerability is cataloged as CVE-2026-92883. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, was found in GitLab up to 19.2.7/19.3.4/19.4.1. This affects an unknown function of the component HTML Attributes. The manipulation with an unknown input leads to a html injection 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. The summary by CVE is:

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.1 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an authenticated user to execute arbitrary JavaScript in the context of other users' browser sessions via a specially crafted repository, due to improper sanitization of HTML attributes in syntax-highlighted output.

It is possible to read the advisory at gitlab.com. This vulnerability is uniquely identified as CVE-2026-92883 since 09/17/2026. The exploitability is told to be easy. It is possible to initiate the attack 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.

Upgrading to version 19.2.8, 19.3.5 or 19.4.2 eliminates this vulnerability.

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Productinfo

Type

• Bug Tracking Software

Name

• GitLab

Version

• 19.2.0
• 19.2.1
• 19.2.2
• 19.2.3
• 19.2.4
• 19.2.5
• 19.2.6
• 19.2.7
• 19.3.0
• 19.3.1
• 19.3.2
• 19.3.3
• 19.3.4
• 19.4.0
• 19.4.1

License

• open-source

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CPE 2.2info

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