When using the OpenWire protocol in ActiveMQ versions 5.14.0 to 5.15.2 it was found that certain system details (such as the OS and kernel version) are exposed as plain text.
https://github.com/AnonUsenix/LLM_Agent_Cybersecurity_Forensic
https://github.com/advisories/GHSA-7qm4-p377-fr2r
https://lists.debian.org/debian-lts-announce/2021/03/msg00005.html