Unauthorized Access Vulnerability in Popup Builder Plugin

CVE-2023-6696

Summary

The Popup Builder plugin for WordPress is susceptible to unauthorized access due to a fundamental flaw in various functions across all versions up to and including 4.3.1. Although some functions implement a nonce check, this approach remains insecure as attackers can easily retrieve valid nonces from a logged-in user's profile page. As a consequence, users with subscriber roles may exploit this vulnerability to perform unauthorized actions such as deleting other subscribers and executing blind Server-Side Request Forgery (SSRF) attacks. It is critical for WordPress site administrators to update to the latest version of the plugin to safeguard against these potential threats.

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