CVE-2026-92883CWE-79cross-site-scripting

CVE-2026-92883

High · published October 13, 2026

CVSS v3.1
8.7
EPSS
0%
Percentile
18.1
In the wild
Unconfirmed
What it 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.

The record
Technical detail
CVSS v3.1
8.7 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00269 · 18.1th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-10-13T06:17Z
Affected products (6)
ProductVersionsFixed in
gitlab/gitlab≥ 19.1.0, < 19.2.819.2.8
gitlab/gitlab≥ 19.1.0, < 19.2.819.2.8
gitlab/gitlab≥ 19.3.0, < 19.3.519.3.5
gitlab/gitlab≥ 19.3.0, < 19.3.519.3.5
gitlab/gitlab≥ 19.4.0, < 19.4.219.4.2
gitlab/gitlab≥ 19.4.0, < 19.4.219.4.2
References (3)
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-2-released/ · [email protected]https://gitlab.com/gitlab-org/gitlab/-/work_items/629523 · [email protected]https://hackerone.com/reports/3936831 · [email protected]
EPSS history
Timeline
  • 14 OCT 03:33Z
    EPSS moved — → 0%
    epss
  • 13 OCT 01:05Z
    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
    cvelistv5
  • 13 OCT 01:05Z
    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
    cvelistv5