PT-2026-97687 · Gitlab · Gitlab

Joaxcar

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CVE-2026-84739

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Published

2026-09-23

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Updated

2026-09-29

CVSS v3.1

8.7

High

VectorAV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
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.

Exploit

Fix

XSS

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Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-84739

Affected Products

Gitlab