CVE-2025-67475
Unknown Unknown - Not Provided
Cross-Site Scripting in MediaWiki CommentParser Allows Code Injection

Publication date: 2026-02-03

Last updated on: 2026-04-09

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 includes/CommentFormatter/CommentParser.Php. This issue affects MediaWiki: from * before 1.39.16, 1.43.6, 1.44.3, 1.45.1.
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Meta Information
Published
2026-02-03
Last Modified
2026-04-09
Generated
2026-06-16
AI Q&A
2026-02-03
EPSS Evaluated
2026-06-15
NVD
EUVD
Affected Vendors & Products
Showing 4 associated CPEs
Vendor Product Version / Range
mediawiki mediawiki 1.45.0
mediawiki mediawiki From 1.39.0 (inc) to 1.39.16 (exc)
mediawiki mediawiki From 1.43.0 (inc) to 1.43.6 (exc)
mediawiki mediawiki From 1.44.0 (inc) to 1.44.3 (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, specifically in the CommentFormatter/CommentParser.Php file. It involves improper neutralization of input during web page generation, which means that malicious scripts can be injected and executed in the context of the affected web pages.

Impact Analysis

This vulnerability can allow attackers to execute malicious scripts in users' browsers when they view affected pages. This can lead to theft of user credentials, session hijacking, defacement, or distribution of malware, compromising user security and trust.

Compliance Impact

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