CVE-2025-6590 Affecting mediawiki package, versions <1:1.35.13-1+deb11u4
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN11-MEDIAWIKI-10586989
- published3 Jul 2025
- disclosed2 Feb 2026
Introduced: 3 Jul 2025
CVE-2025-6590 (opens in a new tab)How to fix?
Upgrade Debian:11 mediawiki to version 1:1.35.13-1+deb11u4 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream mediawiki package and not the mediawiki package as distributed by Debian.
See How to fix? for Debian:11 relevant fixed versions and status.
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.