Description
WordPress Plugin Newsletter-Send awesome emails from WordPress is prone to a cross-site scripting vulnerability because it fails to properly sanitize user-supplied input. An attacker may leverage this issue 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. WordPress Plugin Newsletter-Send awesome emails from WordPress version 6.7.6 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 6.7.7 or latest
References
https://www.youtube.com/watch?v=5dj5QKR7xIQ
https://www.chevonphillip.com/2020/07/13/newsletter-6-7-7-authenticated-stored-cross-site-scripting/
https://plugins.svn.wordpress.org/newsletter/trunk/readme.txt
Related Vulnerabilities
WordPress Plugin Woocommerce Payment Gateway per Category Cross-Site Scripting (2.0.10)
Apache Tomcat Insufficiently Protected Credentials Vulnerability (CVE-2019-12418)
WordPress Plugin Arigato Autoresponder and Newsletter Remote Code Execution (2.5.1.9)
WordPress Plugin Contact Form by Supsystic Cross-Site Scripting (1.7.14)