CyberRota Analysis
AI-GeneratedThe Formidable Forms plugin for WordPress is vulnerable to Stored Cross-Site Scripting due to inadequate input sanitization and output escaping in the 'frm_user_id' parameter, affecting all versions up to 6.33.1. This vulnerability allows unauthenticated attackers to inject malicious scripts that execute when users access compromised pages, potentially leading to unauthorized actions or data exposure. WordPress site administrators and developers using this plugin should prioritize immediate updates to mitigate the risk.
Original NVD Description
The Formidable Forms – WordPress Form Builder for Contact Forms, Calculators, Quizzes & More plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'frm_user_id' parameter in all versions up to, and including, 6.33.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. By forging frm_user_id to match an administrator's user ID — discoverable via the public WordPress REST API — an unauthenticated attacker causes wp_kses_post() to serve as the only output filter, which preserves the injected payload structurally intact; the plugin's admin JavaScript then decodes and executes it automatically on page load.