Description
WordPress Plugin WordPress Related Posts 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 WordPress Related Posts version 2.6.1 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 2.6.2 or latest
References
http://secunia.com/advisories/53279/
http://www.securityfocus.com/bid/59839/
https://wordpress.org/plugins/wordpress-23-related-posts-plugin/changelog/
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