This indicates an attack attempt to exploit a Privilege Escalation Vulnerability in WordPress Platform Theme.
The vulnerability is due to insufficient sanitizing of user supplied inputs in the application when parsing a crafted HTTP request. A remote attacker could exploit this to gain admin privileges of the target application, via a crafted HTTP request.
WordPress Theme Platform version before 1.4.4
WordPress Theme Platform Pro version before 1.6.2
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the most recent upgrade or patch from the vendor.