WPBookit Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the WPBookit plugin for WordPress, affecting all versions through 1.0.6. The issue arises from a lack of proper capability checks in the 'save_custome_code' function, which handles custom CSS and JavaScript code. This flaw allows unauthenticated attackers to inject arbitrary scripts that are executed whenever a user accesses an affected page.

Impact

Exploitation of this vulnerability allows for stored cross-site scripting, where injected scripts are executed on every page load, potentially leading to session hijacking.

Reproduction

To reproduce this vulnerability, send a POST request to the 'wpb_ajax_post' action with the 'route_name' parameter set to 'save_custome_code'. Include the malicious JavaScript in the 'js_code' parameter and a comment or benign value in the 'css_code' parameter. After injection, the malicious script will execute on page loads.

Remediation

Users are advised to update the WPBookit plugin to version 1.0.7 or later.