Medium severity5.4NVD Advisory· Published Jul 7, 2025· Updated Jun 17, 2026
CVE-2025-53478
CVE-2025-53478
Description
The CheckUser extension’s Special:Investigate interface is vulnerable to reflected XSS due to improper escaping of certain internationalized system messages rendered on the “IPs and User agents” tab.
This issue affects Mediawiki - CheckUser extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1- Range: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2
Patches
Vulnerability mechanics
References
2News mentions
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