Description
WordPress Plugin Custom 404 Pro 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 Custom 404 Pro version 3.2.7 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 3.2.8 or latest
References
Related Vulnerabilities
Python Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2016-2183)
Joomla Improper Input Validation Vulnerability (CVE-2015-8562)
WordPress Plugin Lazy Load Cross-Site Scripting (0.6)
MySQL CVE-2019-2695 Vulnerability (CVE-2019-2695)
WordPress Plugin All in One Webmaster Unspecified Vulnerability (11.0)