Description
WordPress is prone to a prototype pollution vulnerability. Exploiting this issue 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 5.3.x ranging from 5.3 and up to (and including) 5.3.11 are vulnerable.
Remediation
Update to WordPress version 5.3.12 or latest
References
https://github.com/BlackFan/client-side-prototype-pollution/blob/master/pp/jquery-query-object.md
https://wordpress.org/support/wordpress-version/version-5-3-12/
Related Vulnerabilities
SugarCRM Improper Control of Generation of Code ('Code Injection') Vulnerability (CVE-2019-17310)
TYPO3 Unrestricted Upload of File with Dangerous Type Vulnerability (CVE-2017-14251)
Oracle JRE CVE-2019-2949 Vulnerability (CVE-2019-2949)
WordPress Plugin WooCommerce Email Test Information Disclosure (1.5)