Description
Joomla! Core is prone to multiple cross-site scripting vulnerabilities because it fails to properly sanitize user-supplied input. An attacker may leverage these issues to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks. Joomla! Core versions 3.x.x ranging from 3.0.0 and up to and including 3.9.3 are vulnerable.
Remediation
Update to Joomla! Core version 3.9.4 or latest
References
https://developer.joomla.org/security-centre/773-20190302-core-xss-in-item-title-layout.html
https://developer.joomla.org/security-centre/774-20190303-core-xss-in-media-form-field.html
Related Vulnerabilities
MySQL CVE-2016-0648 Vulnerability (CVE-2016-0648)
Oracle JRE CVE-2013-0351 Vulnerability (CVE-2013-0351)
OpenSSL Numeric Errors Vulnerability (CVE-2016-2105)
WordPress Plugin Easy PayPal Buy Now Button Multiple Vulnerabilities (1.7.2)
WordPress Plugin Structured Content (JSON-LD) #wpsc Cross-Site Scripting (1.5)