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Threat Entry
Updated 2024-11-21
CVE-2021-34658 - Simple Popup Newsletter Plugin
The Simple Popup Newsletter WordPress plugin is vulnerable to Reflected Cross-Site Scripting due to the use of $_SERVER['PHP_SELF'] in the ~/simple-popup-newsletter.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 1.4.7.
PLUGIN
Simple Popup Newsletter
CVE-2021-34658
Risk Score