An XML External Entity (XXE) issue was discovered in Python through 3.9.1. The plistlib module no longer accepts entity declarations in XML plist files to avoid XML vulnerabilities.
https://security.netapp.com/advisory/ntap-20231006-0007/
https://lists.debian.org/debian-lts-announce/2023/10/msg00017.html
https://lists.debian.org/debian-lts-announce/2023/09/msg00022.html