CVE-2021-42045 Information

Description

An issue was discovered in SecurePoll in the Growth extension in MediaWiki through 1.36.2. Simple polls allow users to create alerts by changing their User-Agent HTTP header and submitting a vote.

Reference

https://gerrit.wikimedia.org/r/q/I4f04083cd00884d3b85245460774c81c7639a578 https://phabricator.wikimedia.org/T289385