CVE-2022-1756: Thenewsletterplugin Newsletter

Medium severity, CVSS 6.1. EPSS: 1.9% chance of exploitation in the next 30 days.

The Newsletter WordPress plugin before 7.4.5 does not sanitize and escape the $_SERVER['REQUEST_URI'] before echoing it back in admin pages. Although this uses addslashes, and most modern browsers automatically URLEncode requests, this is still vulnerable to Reflected XSS in older browsers such as Internet Explorer 9 or below.

Affected products

Published 2022-06-13. Last modified 2026-06-17.