A quick python proof of concept for CVE-2019-3398 confluence vulnerability written in python.
Confluence version 6.12.3, 6.13.3, 6.14.2, and 6.15.1 are affected.
The exploit requires working credentials.
Edit the os_username and os_password fields, and possibly the filename path depending on the vulnerable server. If the path is set right, shell.jsp will be available on the root of the web server.