MediaWiki <1.44.0 Unauthorized Info Leak via HTMLUserTextField
CVE-2025-6590 Published on February 2, 2026
Complete content leak of private wikis due to PasswordReset Wikitext injection in error message
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/htmlform/fields/HTMLUserTextField.Php.
This issue affects MediaWiki: from * through 1.39.12, 1.42.76 1.43.1, 1.44.0.
Weakness Type
What is an Information Disclosure Vulnerability?
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
CVE-2025-6590 has been classified to as an Information Disclosure vulnerability or weakness.
Products Associated with CVE-2025-6590
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Affected Versions
Wikimedia Foundation MediaWiki:- Version *, <= 1.39.12, 1.42.76 1.43.1, 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.