Provide references for CVE-2021-31553.
Where can I find more information about CVE-2021-31553?
References are available at: https://phabricator.wikimedia.org/T275669, https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667023, https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667024, https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667025, https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667027, https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/666963, https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/666964.