Cross-Site Scripting Vulnerability in GitLab Community Edition and Enterprise Edition
CVE-2026-92883

8.7HIGH

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
13 October 2026

What is CVE-2026-92883?

GitLab has identified a cross-site scripting (XSS) vulnerability that affects GitLab Community Edition and Enterprise Edition. This issue arises from improper sanitization of HTML attributes in syntax-highlighted output in certain versions. An authenticated user could exploit this vulnerability to execute arbitrary JavaScript in the context of other users' browser sessions by leveraging a specially crafted repository. To mitigate this issue, it's crucial to upgrade to the patched versions of GitLab.

Affected Version(s)

GitLab 19.1 < 19.2.8

GitLab 19.3 < 19.3.5

GitLab 19.4 < 19.4.2

References

https://gitlab.com/gitlab-org/gitlab/-/work_items/629523
https://hackerone.com/reports/3936831
technical-descriptionexploitpermissions-required
https://docs.gitlab.com/releases/patches/patch-release-gi...

CVSS V3.1

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Thanks [a0xnirudh](https://hackerone.com/a0xnirudh) for reporting this vulnerability through our HackerOne bug bounty program
.