Description
WordPress Plugin Contact Form by Supsystic 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 Contact Form by Supsystic version 1.7.19 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 1.7.20 or latest
References
https://www.exploit-db.com/exploits/50460
https://plugins.svn.wordpress.org/contact-form-by-supsystic/trunk/readme.txt
Related Vulnerabilities
WordPress Plugin WordPress Meta Data and Taxonomies Filter (MDTF) PHP Object Injection (1.2.2)
Drupal Core 4.6.x Form Action Attribute Injection (4.6.0 - 4.6.9)
WordPress Plugin 3DPrint Lite Cross-Site Scripting (1.9.1.5)
Joomla CVE-2012-5827 Vulnerability (CVE-2012-5827)
Atlassian Jira Cross-Site Request Forgery (CSRF) Vulnerability (CVE-2021-39124)