CVE-2026-9729 Web Push Notifications <= 4.39.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'webpushr_notification_title' Post Meta Parameter

The Webpushr Push Notifications plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'webpushrnotificationtitle' and 'webpushrnotificationbody' parameters in versions up to, and including, 4.39.0. This is due to insufficient input sanitization in the savesendnotificationflag...