Hermanhms

An issue exists where the software fails to restrict which classes can be instantiated during the deserialization of data stored by unauthenticated users. This leads to PHP Object Injection, which is triggered when an administrator reviews the stored data. If a suitable gadget chain—a sequence of existing code fragments that can be executed—is present on the site, this could allow for remote code execution.

Unauthenticated attackers can perform SQL injection attacks because the software fails to properly sanitize and escape values taken from requests before using them in SQL statements. This occurs due to insufficient escaping of user-supplied parameters and a lack of sufficient preparation of the existing SQL query, allowing attackers to append additional queries to extract sensitive information from the database.