Description
WordPress Plugin Coming Soon & Maintenance Mode Page is prone to a vulnerability that lets remote attackers inject and execute arbitrary code because the application fails to sanitize user-supplied input before being passed to the unserialize() PHP function. Attackers can possibly exploit this issue to execute arbitrary PHP code within the context of the affected webserver process. WordPress Plugin Coming Soon & Maintenance Mode Page version 1.42 is vulnerable; prior versions may also be affected.
Remediation
Disable the plugin until a fix is available
References
Related Vulnerabilities
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PHP Permissions, Privileges, and Access Controls Vulnerability (CVE-2010-3436)
WordPress Plugin Gallery Objects SQL Injection (0.4)
Ruby on Rails Improper Input Validation Vulnerability (CVE-2016-2098)
Jenkins Deserialization of Untrusted Data Vulnerability (CVE-2017-2608)