CVE-2012-4380: Mediawiki

High severity, CVSS 7.5. EPSS: 1.6% chance of exploitation in the next 30 days.

MediaWiki before 1.18.5, and 1.19.x before 1.19.2 allows remote attackers to bypass GlobalBlocking extension IP address blocking and create an account via unspecified vectors.

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.