Access violation vulnerability in GenerateBlocks 2.1.1

The GenerateBlocks plugin for WordPress has a security issue that allows unauthorized users to access data without proper permission checks. This vulnerability affects all versions up to 2.1.1, and it can be exploited by attackers who have contributor level access or higher. This means that sensitive information, like SMTP credentials, API keys, and other data from other plugins, can be read by these attackers.