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 Google Drive for WordPress Information Disclosure (2.2)
WordPress Plugin Ultimate Google Analytics Cross-Site Request Forgery (1.6.0)
Internet Information Services Integer Overflow or Wraparound Vulnerability (CVE-2008-1446)
WordPress Plugin Redirection 'id' Parameter Cross-Site Scripting (2.2.8)