Qi Blocks WordPress Plugin Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the Qi Blocks WordPress plugin, affecting versions prior to 1.4. The issue arises because the plugin fails to properly validate and escape certain options in its Countdown block before rendering them on a page or post. This flaw enables users with a contributor role or higher to inject malicious scripts that are executed when the content is viewed.

Impact

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

Remediation

Users are advised to update the Qi Blocks WordPress plugin to version 1.4 or later.