This is an attack attempt against a vulnerability in PAJAX.
This issue is triggered when PHP code is included in the 'method' and 'args' variables, which may lead to a loss of integrity. An attacker may exploit this to gain access to unauthorized privileges.
PAJAX PAJAX 0.5.1
Attackers can execute arbitrary PHP code to gain unauthorized access.
Upgrade to version 0.5.2 or higher, as it has been reported to fix this vulnerability.