Input validation vulnerability in Easy Textillate 2.02

The Easy Textillate plugin for WordPress has a security issue that makes it vulnerable to a type of cyber attack called Stored Cross-Site Scripting. This problem affects all versions of the plugin, including the latest one, 2.02. The issue is caused by not properly checking and filtering the information provided by users, which allows attackers with contributor-level or higher access to insert malicious code into pages. This code will then run whenever someone visits the affected page.