Security Advisory
CVE-2021-34658
6.1
MEDIUM
Vulnerability Description
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.
Published Date
August 16, 2021
Official Source
NIST NVD Advisory