Description
WordPress Plugin Notification-Custom Notifications and Alerts for 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 Notification-Custom Notifications and Alerts for WordPress version 7.2.4 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 8.0.0 or latest
References
https://github.com/BigTiger2020/word-press/blob/main/Notification.md
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39340
https://plugins.svn.wordpress.org/notification/trunk/readme.txt
Related Vulnerabilities
WordPress Improper Input Validation Vulnerability (CVE-2020-35539)
WordPress Plugin MailPoet-emails and newsletters in WordPress Cross-Site Scripting (3.23.1)
Oracle Database Server Other Vulnerability (CVE-2005-0297)
Ruby on Rails Improper Input Validation Vulnerability (CVE-2011-3187)
Moodle Insertion of Sensitive Information into Log File Vulnerability (CVE-2018-10889)