CVE-2026-92883: GitLab Community Edition and Enterprise Edition cross-site scripting in syntax highlighting

CVE-2026-92883 · Severity: high · CVSS 8.7 · Published 2026-10-13

GitLab is a web-based platform for managing software code repositories and CI/CD pipelines. An authenticated attacker can inject malicious JavaScript code into a repository that executes in other users' browser sessions when they view the code, potentially allowing account takeover or data theft. This requires the attacker to have repository access and a victim to view the affected code.

Technologies: GitLab Community Edition, GitLab Enterprise Edition, GitLab. Vendors: GitLab.

Quick answers

Is CVE-2026-92883 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-92883 being exploited in the wild.
How severe is CVE-2026-92883?
High severity, with a CVSS score of 8.7, published 13 October 2026.
Which products and versions are affected?
GitLab Community Edition 19.1 to 19.2.7, 19.3.0 to 19.3.4, 19.4.0 to 19.4.1; GitLab Enterprise Edition 19.1 to 19.2.7, 19.3.0 to 19.3.4, 19.4.0 to 19.4.1.
Is there a fix for CVE-2026-92883?
Yes: fixed in GitLab CE/EE 19.2.8, 19.3.5, 19.4.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-92883 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-92883?
Check whether you run GitLab Community Edition, GitLab Enterprise Edition or GitLab at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: GitLab CE/EE 19.2.8, 19.3.5, 19.4.2

Technical details

A cross-site scripting vulnerability exists in GitLab's syntax highlighting output due to improper sanitization of HTML attributes. An authenticated user can craft a malicious repository that, when syntax-highlighted and viewed by other users, executes arbitrary JavaScript in their browser context. The attack requires user interaction (viewing the repository) and prior authentication by the attacker.

Affected products

  • GitLab Community Edition 19.1 to 19.2.7, 19.3.0 to 19.3.4, 19.4.0 to 19.4.1
  • GitLab Enterprise Edition 19.1 to 19.2.7, 19.3.0 to 19.3.4, 19.4.0 to 19.4.1

Timeline

  • 2026-10-13: disclosed
  • 2026-10-12: patched: Patch releases 19.4.2, 19.3.5, 19.2.8 published

References

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