Description
WordPress Plugin Related Posts for WordPress is prone to a cross-site scripting vulnerability because it fails to properly sanitize user-supplied input. An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks. WordPress Plugin Related Posts for WordPress version 1.8.1 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 1.8.2 or latest
References
http://www.barrykooij.com/several-security-updates-released/
https://wordpress.org/plugins/related-posts-for-wp/changelog/
Related Vulnerabilities
MySQL Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2016-8286)
WordPress Plugin WP Ad Guru Lite Cross-Site Scripting (1.6.0)
WordPress Plugin Super Logos Showcase for WordPress Arbitrary File Upload (2.2)
WordPress Plugin JobSearch WP Job Board Cross-Site Scripting (1.5.2)
WordPress Plugin WordPress Simple Shopping Cart Cross-Site Request Forgery (3.5)