Redirection for Contact Form 7 Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the Redirection for Contact Form 7 WordPress plugin, affecting all versions through 3.2.6. The issue arises from inadequate input sanitization and output escaping in the plugin's qs_date shortcode, allowing authenticated attackers with contributor-level access or higher to inject arbitrary scripts. These scripts are executed when users access the affected pages.

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.

Reproduction

To reproduce this vulnerability, an authenticated user with contributor-level access or higher can use the qs_date shortcode to inject a script. The lack of proper sanitization and escaping on the shortcode's attributes enables the injection of malicious scripts that will be executed when the page is viewed.

Remediation

Users are advised to update the Redirection for Contact Form 7 plugin to version 3.2.7 or later.