WordPress User Post Gallery plugin through 2.19 is susceptible to remote code execution. The plugin does not limit which callback functions can be called by users, making it possible for an attacker execute malware, obtain sensitive information, modify data, and/or gain full control over a compromised system without entering necessary credentials.
View the template here CVE-2022-4060.yaml
References:
https://wordpress.org/plugins/wp-upg/