ktg-mes before commit a484f96 (2025-07-03) has a fastjson deserialization vulnerability. This is because it uses a vulnerable version of fastjson and deserializes unsafe input data.
https://github.com/ChangeYourWay/post/blob/main/ktg-mes.md
https://gist.github.com/ChangeYourWay/8651679a2155269bccf520fcb34fc661