OCTOBER 5, 2026
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Case File

CVE-2026-84739

HIGH · CVSS 8.7 EPSS 0.46%

Source: NVD + CISA KEV + EPSS · Published 2026-09-29 · Last synced 2026-10-05

CyberRota Analysis

AI-Generated

GitLab CE/EE versions prior to 19.2.7, 19.3.3, and 19.4.1 are vulnerable to a flaw that allows authenticated users to execute arbitrary JavaScript in another user's browser session due to inadequate sanitization of path components in the merge request diff viewer. This vulnerability poses a high risk of cross-site scripting (XSS) attacks, potentially compromising user sessions and sensitive data. Organizations using affected versions of GitLab should prioritize immediate updates to mitigate this security risk.

CVE
CVE-2026-84739
Severity
HIGH
CVSS
8.7
EPSS
0.46%
Java GitLab

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)