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 5.6.x ranging from 5.6 and up to (and including) 5.6.7 are vulnerable.
Remediation
Update to WordPress version 5.6.8 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-5-6-8/
Related Vulnerabilities
Oracle JRE CVE-2013-2427 Vulnerability (CVE-2013-2427)
Atlassian Jira Authorization Bypass Through User-Controlled Key Vulnerability (CVE-2021-41307)
TYPO3 Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2010-5104)
WordPress Plugin youForms for WordPress-Creating Forms for CopeCart Cross-Site Scripting (1.0.5)