Intel

AIKIDO-2026-539489

mediawiki/semantic-media-wiki is vulnerable to Cross-Site Scripting (XSS)

Cross-Site Scripting (XSS) Pre-CVE
Found by Aikido Intel before public disclosure or CVE publication.
Published Aug 21, 2026

61

Medium Risk

This Affects:

PHPmediawiki/semantic-media-wiki
3.0.0 - 7.2.0
Fixed in 7.2.1
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TL;DR

Several Semantic MediaWiki special pages render request-controlled error text as raw HTML. Query-error messages on Special:Ask and Special:FacetedSearch, and the invalid-subject message on Special:Browse, are derived from user-supplied input and passed to error-box output without sufficient escaping. Percent-encoded angle brackets can survive the message-encoding step and are reflected as live markup in the browser of a user who follows a crafted link. The fix applies HTML escaping to the reflected error and subject text before it is rendered.

Who does this affect?

You are affected if you are using a version that falls within the vulnerable range.

Background info

mediawiki/semantic-media-wiki is vulnerable to Cross-Site Scripting (XSS) in versions 3.0.0 - 7.2.0.

How to fix this

Upgrade the mediawiki/semantic-media-wiki library to the patch version.

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