An issue was discovered in Joomla! before 3.9.13. A missing access check in the phputf8 mapping files could lead to a path disclosure.
CWE-862 - Missing Authorization
The missing authorization vulnerability occurs when a software program allows users to access privileged parts of the program without verifying the user credentials. Impact of such a vulnerability depends on the resources employed by the software, ranging from account takeover to sensitive information exposure, denial of service, and complete system takeover.