Input validation vulnerability in Ultimate Blocks – All-in-one Gutenberg Blocks for Block Editor 3.3.6

The Ultimate Blocks plugin for WordPress is not very secure and can be easily exploited by hackers. This can happen in versions 3.3.6 and below, because the plugin does not properly protect against harmful code being inserted into web pages. As a result, hackers with certain levels of access can insert their own malicious code into pages, which will then run whenever someone visits that page.