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.

Attack Vector Network

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00018.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Wikimedia Foundation Vector unaffected
Version Status Constraints
>= 1.40.0 affected < 1.42.7, 1.43.2, 1.44.0

No data.

No data.

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Vendors Products
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Vector Subscribe

Project Subscriptions

Vendors Products
Wikimedia Subscribe
Vector Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://phabricator.wikimedia.org/T396685 cve-icon cve-icon
History

Wed, 04 Feb 2026 12:30:00 +0000

Type Values Removed Values Added
First Time appeared Wikimedia
Wikimedia vector
Vendors & Products Wikimedia
Wikimedia vector

Tue, 03 Feb 2026 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Mon, 02 Feb 2026 23:15:00 +0000

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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: wikimedia-foundation

Published:

Updated: 2026-02-03T21:12:11.934Z

Reserved: 2025-06-24T22:28:16.378Z

Link: CVE-2025-6596

cve-icon Vulnrichment

Updated: 2026-02-03T21:11:51.960Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-02T23:16:02.310

Modified: 2026-02-03T16:44:03.343

Link: CVE-2025-6596

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-04T12:17:59Z

Weaknesses