MediaWiki PageHTMLHandler PHP RCE before 1.39.14/1.43.4/1.44.1
CVE-2025-61634 Published on February 2, 2026
HTML rest endpoint needs PoolCounter and proper parser cache check
Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Rest/Handler/PageHTMLHandler.Php.
This issue affects MediaWiki: from * before 1.39.14, 1.43.4, 1.44.1.
Products Associated with CVE-2025-61634
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Affected Versions
Wikimedia Foundation MediaWiki:- Version * and below 1.39.14, 1.43.4, 1.44.1 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.