Stackable Page Builder Gutenberg Blocks Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the Stackable – Page Builder Gutenberg Blocks plugin for WordPress, affecting all versions through 3.13.11. The issue arises in the Button block's 'title' parameter, where inadequate input sanitization and output escaping allow authenticated attackers with Contributor-level access or higher to inject arbitrary scripts. These scripts are executed when a user views the page containing the injected content.

Impact

Exploitation of this vulnerability allows for stored cross-site scripting, where injected scripts are executed in the context of the user viewing the page.

Remediation

Users are advised to update the Stackable – Page Builder Gutenberg Blocks plugin to version 3.13.12 or later.