CVE-2019-12472: Undefined Security Weakness

An Incorrect Access Control vulnerability was found in Wikimedia MediaWiki 1.18.0 through 1.32.1. It is possible to bypass the limits on IP range blocks $wgBlockCIDRLimit by using the API. Fixed in 1.32.2, 1.31.2, 1.30.2 and 1.27.6...