CVE-2018-17857
An issue was discovered in Joomla! before 3.8.13. Inadequate checks on the tags search fields can lead to an access level violation.
Date published : 2018-10-09
http://www.securityfocus.com/bid/105559
https://developer.joomla.org/security-centre/753-20181003-core-access-level-violation-in-com-tags
