Stored Cross-Site Scripting Vulnerability in Nonaki Email Template Builder for WordPress

CVE-2025-12644

What is CVE-2025-12644?

The Nonaki – Drag and Drop Email Template builder and Newsletter plugin for WordPress is susceptible to Stored Cross-Site Scripting (XSS) through the 'nonaki' shortcode in all versions until 1.0.11. This vulnerability arises from inadequate input sanitization and output escaping of user-supplied custom field values that are processed by the shortcode. As a result, authenticated attackers with contributor-level access or higher can inject malicious web scripts into pages, which execute whenever a user visits the compromised page, posing significant risks to website integrity and user data.

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