All versions of package asneg/opcuastack are vulnerable to Denial of Service (DoS) due to a missing handler for failed casting when unvalidated data is forwarded to boost::get function in OpcUaNodeIdBase.h. Exploiting this vulnerability is possible when sending a specifically crafted OPC UA message with a special encoded NodeId.
https://security.snyk.io/vuln/SNYK-UNMANAGED-ASNEGOPCUASTACK-2988732