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AIKIDO-2026-746216

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

Cross-Site Scripting (XSS)GHSA-4fr3-ghqj-28wx Published Yesterday

61

Medium Risk

This Affects:

PHPmediawiki/semantic-media-wiki
3.1.0 - 7.3.0
Fixed in 7.3.1
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TL;DR

Special:SMWAdmin entity lookup writes the id parameter into a warning box through plain text message substitution when the id matches no stored entity. The page replaces the request token with the current user's own token before routing, so the link needs no CSRF token. An administrator who opens the link gets the reflected markup in their session, leading to cross-site scripting. The fix escapes id before building the warning.

Who does this affect?

You are affected if you are using a version that falls within the vulnerable range and an administrator opens a crafted link.

Background info

mediawiki/semantic-media-wiki is vulnerable to Cross-Site Scripting (XSS) in versions 3.1.0 - 7.3.0.

How to fix this

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

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