Summary
This host is installed with WordPress Is-human Plugin and is prone to remote command execution vulnerability.
Impact
Successful exploitation will let remote attackers to execute malicious commands in the context of an affected site, also remote code execution is possible.
Impact Level: Application/System
Solution
No solution or patch was made available for at least one year since disclosure of this vulnerability. Likely none will be provided anymore.
General solution options are to upgrade to a newer release, disable respective features, remove the product or replace the product by another one.
Insight
The flaws are caused by improper validation of user-supplied input to the 'passthru()' function in 'wp-content/plugins/is-human/engine.php', which allows attackers to execute commands in the context of an affected site.
Affected
Is-human Wordpress plugin version 1.4.2 and prior.
References
