CVE-2025-61637
Unknown Unknown - Not Provided
Cross-Site Scripting in MediaWiki Edit and Page Preview Components

Publication date: 2026-02-03

Last updated on: 2026-03-16

Assigner: wikimedia-foundation

Description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files resources/src/mediawiki.Action/mediawiki.Action.Edit.Preview.Js, resources/src/mediawiki.Page.Preview.Js. This issue affects MediaWiki: from * before 1.39.14, 1.43.4, 1.44.1.
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Meta Information
Published
2026-02-03
Last Modified
2026-03-16
Generated
2026-06-16
AI Q&A
2026-02-03
EPSS Evaluated
2026-06-15
NVD
CVE-2025-61637
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
mediawiki mediawiki to 1.39.14 (exc)
mediawiki mediawiki From 1.39.15 (inc) to 1.43.4 (exc)
mediawiki mediawiki From 1.43.5 (inc) to 1.44.1 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Executive Summary

This vulnerability is a Cross-site Scripting (XSS) issue in Wikimedia Foundation MediaWiki. It occurs due to improper neutralization of input during web page generation, specifically in certain JavaScript files related to page preview and editing. This means that malicious input could be injected and executed in the context of a user's browser.

Impact Analysis

The vulnerability could allow attackers to execute malicious scripts in users' browsers when they view affected pages. This can lead to theft of user credentials, session hijacking, or other malicious actions performed on behalf of the user.

Compliance Impact

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