Description
WordPress is prone to multiple prototype pollution vulnerabilities. Exploiting these issues could allow an attacker to inject key/value �properties� into JavaScript objects, potentially allowing for execution of arbitrary JavaScript in a user�s session if they can trick that user into clicking a link. WordPress versions 5.7.x ranging from 5.7 and up to (and including) 5.7.5 are vulnerable.
Remediation
Update to WordPress version 5.7.6 or latest
References
https://github.com/BlackFan/client-side-prototype-pollution/blob/master/pp/jquery-query-object.md
https://github.com/WordPress/gutenberg/pull/39365/files
https://wordpress.org/support/wordpress-version/version-5-7-6/
Related Vulnerabilities
Joomla! Core 4.x.x Multiple Vulnerabilities (4.0.0 - 4.2.3)
WordPress Plugin Essential Content Types Security Bypass (1.8.6)
PHP Use of Externally-Controlled Format String Vulnerability (CVE-2011-1153)
PHP Out-of-bounds Read Vulnerability (CVE-2017-9118)
WordPress Plugin LearnPress-WordPress LMS Cross-Site Scripting (4.1.6.5)