CVE-2026-18843: Beaver Builder Plugin (Pro Version) <= 2.11.0.1 - Reflected Cross-Site Scripting via 'no_results_message' node_preview Parameter
The Beaver Builder Plugin (Starter Version) plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via 'noresultsmessage' nodepreview Parameter in all versions up to, and including, 2.11.0.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
Affected Software
Event History
Frequently Asked Questions
Who is exposed to this issue?
WordPress sites using the Beaver Builder Plugin Starter Version or Pro Version at 2.11.0.1 or earlier are affected. Exploitation targets users who can be induced to visit or click an attacker-controlled link.
Does an attacker need an account or special permissions?
No. The vulnerability can be exploited by an unauthenticated attacker, but user interaction is required for the injected script to execute.
What input is involved in exploitation?
The affected input is the no_results_message parameter associated with node_preview. Insufficient sanitization and output escaping allow attacker-supplied script content to be reflected in a page.