CVE-2026-92883

high

Description

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.

References

https://hackerone.com/reports/3936831

https://thehackernews.com/2026/10/gitlab-patches-cvss-100-flaw-that-could.html

https://securityaffairs.com/200868/security/gitlab-patches-max-severity-vulnerability-cve-2026-97229.html

https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-2-released/

https://gitlab.com/gitlab-org/gitlab/-/work_items/629523

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-98215

Details

Source: Mitre, NVD

Published: 2026-10-13

Updated: 2026-10-13

Risk Information

CVSS v2

Base Score: 8.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 8.7

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

Severity: High

EPSS

EPSS: 0.00275