Input validation vulnerability in Sinatra 1.3

The theme used for WordPress called “Sinatra” is at risk of a security issue called Stored Cross-Site Scripting. This can happen in versions 1.3 or earlier because the theme does not properly clean up and protect the input and output of information. This means that someone who has access to the website and is at the contributor level or higher can add dangerous code to a page. If someone visits that page, the code will run and could harm the user.