Cross-site Scripting (XSS) in Preview functionality in Amasty Blog Pro for Magento 2
The Preview functionality in the Amasty Blog Pro 2.10.3 plugin for Magento 2 uses eval unsafely. This allows attackers to perform Cross-site Scripting attacks on admin panel users by manipulating the generated preview application response.
The vulnerability is present in blog/view/base/web/js/adminhtml/preview.js file.
In references you can find a similar issue in Magento 2 in which they fixed the problem.
< 2.10.5
Update Amasty Blog Pro for Magento 2 to 2.10.5 or newer.