Cross-site scripting (XSS) vulnerability in wp-includes/wp-db.php in WordPress before 4.2.1 allows remote attackers to inject arbitrary web script or HTML via a long comment that is improperly stored because of limitations on the MySQL TEXT data type.
https://wpvulndb.com/vulnerabilities/7945
https://wordpress.org/news/2015/04/wordpress-4-2-1/
https://core.trac.wordpress.org/changeset/32299
http://www.securitytracker.com/id/1032199
http://www.securityfocus.com/bid/74334
http://www.debian.org/security/2015/dsa-3250
http://osvdb.org/show/osvdb/121320
http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158278.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158271.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-May/157391.html