MediaWiki XSS via ApiSandbox.Js <=1.39.13,1.42.7,1.43.2,1.44.0
CVE-2025-6594 Published on February 2, 2026
XSS in Special:ApiSandbox
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 resources/src/mediawiki.Special.Apisandbox/ApiSandbox.Js.
This issue affects MediaWiki: from 1.27.0 before 1.39.13, 1.42.7 1.43.2, 1.44.0.
Vulnerability Analysis
CVE-2025-6594 is exploitable with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.
Weakness Type
What is a XSS Vulnerability?
The software 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.
CVE-2025-6594 has been classified to as a XSS vulnerability or weakness.
Products Associated with CVE-2025-6594
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Affected Versions
Wikimedia Foundation MediaWiki:- Version 1.27.0 and below 1.39.13, 1.42.7 1.43.2, 1.44.0 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.