Input validation vulnerability in Appzend 1.2.6

The Appzend theme for WordPress has a security issue called Stored Cross-Site Scripting. This means that hackers can add harmful code to the ‘progressbarLayout’ part of the theme, allowing them to control the website and potentially harm users. This problem affects all versions of the theme up to 1.2.6, and it happens because the theme does not properly clean up and protect against malicious code. If someone with Contributor-level access or higher uses this vulnerability, they can inject harmful code that will run whenever a user visits that page.