Description
Joomla! Core is prone to a directory traversal vulnerability because it fails to sufficiently verify user-supplied input. Exploiting this issue can allow an attacker to obtain sensitive information that could aid in further attacks. Joomla! Core versions ranging from 1.5.0 and up to and including 3.9.4 are vulnerable.
Remediation
Update to Joomla! Core version 3.9.5 or latest
References
https://www.exploit-db.com/exploits/46710
https://developer.joomla.org/security-centre/777-20190401-core-directory-traversal-in-com-media.html
Related Vulnerabilities
PHP Other Vulnerability (CVE-2007-3790)
Drupal Improper Input Validation Vulnerability (CVE-2019-6339)
WordPress Server-Side Request Forgery (SSRF) Vulnerability (CVE-2017-9066)
IBM WebSEAL Observable Differences in Behavior to Error Inputs Vulnerability (CVE-2020-4661)
WordPress Plugin Duplicate Page Multiple Vulnerabilities (2.3)