Description
Joomla! Core is prone to a local file inclusion vulnerability because it fails to sufficiently verify user-supplied input. Exploiting this issue may allow an attacker to obtain sensitive information that could aid in further attacks. Joomla! Core versions ranging from 2.5.0 and up to and including 3.8.8 are vulnerable.
Remediation
Update to Joomla! Core version 3.8.9 or latest
References
Related Vulnerabilities
WordPress Plugin HTML5 Lyrics Karaoke Player Cross-Site Scripting (1.06)
WordPress Plugin WooCommerce PDF Invoices & Packing Slips Cross-Site Request Forgery (2.2.6)
WordPress Plugin MapSVG Lite Arbitrary File Disclosure (4.2.3.1)
Squid Permissions, Privileges, and Access Controls Vulnerability (CVE-2015-5400)