Contact Form 7 with ChatWork Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the Contact Form 7 with ChatWork plugin for WordPress, affecting all versions through 1.1.0. The issue arises from inadequate input sanitization and output escaping, allowing authenticated attackers with administrator-level access to inject arbitrary web scripts into pages. These scripts execute when a user accesses the settings page. This vulnerability is present in multi-site installations where unfiltered_html has been disabled.

Impact

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