CVE-2026-84739

Published Sep 29, 2026

Last updated 17 days ago

Overview

Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 13.11 before 19.2.7, 19.3 before 19.3.3, and 19.4 before 19.4.1 that under certain conditions could have allowed an authenticated user to execute arbitrary JavaScript in the context of another user's browser session due to improper sanitization of path components in the merge request diff viewer.
Source
cve@gitlab.com
NVD status
Analyzed
Products
gitlab

Risk scores

CVSS 3.1

Type
Secondary
Base score
8.7
Impact score
5.8
Exploitability score
2.3
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Severity
HIGH

Weaknesses

cve@gitlab.com
CWE-79

Social media

Hype score
Not currently trending

Configurations