Description
WordPress Plugin Simple visitor stat 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 Simple visitor stat version 1.0 is vulnerable; other versions may also be affected.
Remediation
Edit the source code to ensure that input is properly sanitised or disable the plugin until a fix is available
References
Related Vulnerabilities
WordPress URL Redirection to Untrusted Site ('Open Redirect') Vulnerability (CVE-2017-14725)
Django Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2018-6188)
WordPress Plugin Chief Editor Multiple Vulnerabilities (3.7.1)
Squid Improper Input Validation Vulnerability (CVE-2016-2572)
Moodle Permissions, Privileges, and Access Controls Vulnerability (CVE-2009-4301)