CVE-2025-6596

Vector inserts portlet labels as HTML, allowing for stored XSS through system messages

Published Feb 2, 2026 CVSS 4.0 · 0 Low EPSS < 1% KEV · Not listed
Description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Vector. This vulnerability is associated with program files resources/skins.Vector.Js/portlets.Js, resources/skins.Vector.Legacy.Js/portlets.Js.

This issue affects Vector: from >= 1.40.0 before 1.42.7, 1.43.2, 1.44.0.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
References
History
Type Values Removed Values Added
First Time appeared Wikimedia
Wikimedia vector
Vendors & Products Wikimedia
Wikimedia vector
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Vector. This vulnerability is associated with program files resources/skins.Vector.Js/portlets.Js, resources/skins.Vector.Legacy.Js/portlets.Js. This issue affects Vector: from >= 1.40.0 before 1.42.7, 1.43.2, 1.44.0.
Title Vector inserts portlet labels as HTML, allowing for stored XSS through system messages
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 0, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
wikimedia-foundation
Published
Updated
Feb 3, 2026, 9:12 PM
Reserved
Jun 24, 2025, 10:28 PM
Status
Deferred
Published
Feb 2, 2026, 11:16 PM
Modified
Jun 17, 2026, 10:02 AM