CVE-2012-4382: Mediawiki

Medium severity, CVSS 4.9. EPSS: 1.2% chance of exploitation in the next 30 days.

MediaWiki before 1.18.5, and 1.19.x before 1.19.2 does not properly protect user block metadata, which allows remote administrators to read a user block reason via a reblock attempt.

Affected products

• Mediawiki Mediawiki: up to and including 1.18.4; version 1.19.0 only; version 1.19.1 only

Published 2017-10-19. Last modified 2026-06-16.