---
title: "CVE-2026-92883: GitLab CE/EE - Stored XSS"
description: "GitLab CE/EE >= 19.1, < 19.2.8, 19.3, < 19.3.5, and 19.4, < 19.4.2 contain a stored XSS caused by improper sanitization of HTML attributes in syntax-highlighted output, letting authenticated users execute arbitrary JavaScript in other users' browser sessions via specially crafted repositories."
url: https://panop.io/threat-heartbeat/CVE-2026-92883/
---

# CVE-2026-92883 GitLab CE/EE - Stored XSS

GitLab CE/EE >= 19.1, < 19.2.8, 19.3, < 19.3.5, and 19.4, < 19.4.2 contain a stored XSS caused by improper sanitization of HTML attributes in syntax-highlighted output, letting authenticated users execute arbitrary JavaScript in other users' browser sessions via specially crafted repositories.

CVSS base score 8.7 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.27% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-92883)

## Details

Type

Stored XSS

Impact

Client Script Exec

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Published

13 October 2026

Updated

15 October 2026

Weakness

[CWE-79](https://cwe.mitre.org/data/definitions/79.html)

## Vendor fix

Update to versions 19.2.8, 19.3.5, or 19.4.2 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-92883](https://nvd.nist.gov/vuln/detail/CVE-2026-92883)
- [https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-2-released/](https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-2-released/)
- [https://gitlab.com/gitlab-org/gitlab/-/work\_items/629523](https://gitlab.com/gitlab-org/gitlab/-/work_items/629523)
- [https://hackerone.com/reports/3936831](https://hackerone.com/reports/3936831)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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