Pydio Cells through 4.1.2 allows SSRF. For longer running processes, Pydio Cells allows for the creation of jobs, which are run in the background. The job "remote-download" can be used to cause the backend to send a HTTP GET request to a specified URL and save the response to a new file. The response file is then available in a user-specified folder in Pydio Cells.
https://www.redteam-pentesting.de/en/advisories/-advisories-publicised-vulnerability-analyses
https://www.redteam-pentesting.de/advisories/rt-sa-2023-005/