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.
{ "binaries": [ { "binary_name": "mediawiki", "binary_version": "1:1.27.4-3" }, { "binary_name": "mediawiki-classes", "binary_version": "1:1.27.4-3" } ] }