Description
WordPress Plugin Contact Form 7 Multi-Step Forms is prone to a security bypass vulnerability. Exploiting this issue may allow attackers to perform otherwise restricted actions and subsequently perform a variety of the plugin's actions or even take over a website. WordPress Plugin Contact Form 7 Multi-Step Forms version 3.0.8 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 3.0.9 or latest
References
https://github.com/Freemius/wordpress-sdk/commit/50a7ca3d921d59e1d2b39bb6ab3c6c7efde494b8
https://plugins.svn.wordpress.org/contact-form-7-multi-step-module/trunk/readme.txt
Related Vulnerabilities
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WordPress Plugin TemplatesNext ToolKit Cross-Site Scripting (3.2.7)
WordPress Other Vulnerability (CVE-2007-2821)
Collabtive Improper Privilege Management Vulnerability (CVE-2013-5027)