SysAid Help Desk before 15.2 allows remote attackers to cause a denial of service (CPU and memory consumption) via a large number of nested entity references in an XML document to (1) /agententry, (2) /rdsmonitoringresponse, or (3) /androidactions, aka an XML Entity Expansion (XEE) attack.
packetstormsecurity.com/files/132138/SysAid-Help-Desk-14.4-Code-Execution-Denial-Of-Service-Traversal-SQL-Injection.html
seclists.org/fulldisclosure/2015/Jun/8
www.securityfocus.com/archive/1/535679/100/0/threaded
www.securityfocus.com/bid/75038
www.sysaid.com/blog/entry/sysaid-15-2-your-voice-your-service-desk