CVE-2025-53496
Description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - MediaSearch Extension allows Stored XSS.This issue affects Mediawiki - MediaSearch Extension: 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.
Stored XSS vulnerability in MediaWiki's MediaSearch extension allows arbitrary script injection via system messages.
Vulnerability
Overview
The MediaSearch extension for MediaWiki is vulnerable to stored cross-site scripting (XSS) due to improper neutralization of input in system messages. An attacker can inject malicious code that is stored and later executed when other users view the affected page [1].
Exploitation
Conditions
To exploit this vulnerability, an attacker must have permission to edit system messages, which is typically limited to administrators or users with high privileges. No special network position is required; the attack can be carried out from the web interface [1].
Impact
Successful exploitation allows an attacker to execute arbitrary HTML and JavaScript in the context of the victim's browser session. This can lead to account takeover, data theft, or other malicious actions [1].
Mitigation
The issue has been patched in MediaWiki versions 1.42.7 and 1.43.2. Users are advised to update their installations immediately [1].
AI Insight generated on May 19, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
1- Range: >=1.42.0,<1.43.2
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
2News mentions
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