Description
WordPress Plugin Custom Simple Rss is prone to a cross-site request forgery vulnerability. Exploiting this issue may allow a remote attacker to perform certain administrative actions and gain unauthorized access to the affected application; other attacks are also possible. WordPress Plugin Custom Simple Rss version 2.0.6 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 2.0.7 or latest
References
https://www.linkedin.com/in/mehdi-esmaeilpour-a9b633141/
https://plugins.svn.wordpress.org/custom-simple-rss/trunk/readme.txt