An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. MassEditRegex allows CSRF.Referenceshttps://phabricator.wikimedia.org/T293341https://gerrit.wikimedia.org/r/q/I5980de35b0a01b5242b68b7b0bdc08adf5d968d8
