CVE-2015-2931: Mediawiki

Medium severity, CVSS 4.3. EPSS: 2.2% chance of exploitation in the next 30 days.

Incomplete blacklist vulnerability in includes/upload/UploadBase.php in MediaWiki before 1.19.24, 1.2x before 1.23.9, and 1.24.x before 1.24.2 allows remote attackers to inject arbitrary web script or HTML via an application/xml MIME type for a nested SVG with a data: URI.

Affected products

• Mediawiki Mediawiki: up to and including 1.19.23; version 1.20 only; version 1.20.1 only; version 1.20.2 only; version 1.20.3 only; version 1.20.4 only; …

Published 2015-04-13. Last modified 2026-06-17.