Description
WordPress Plugin Modern Events Calendar Lite 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 Modern Events Calendar Lite version 5.22.1 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 5.22.2 or latest
References
https://sploitus.com/exploit?id=WPEX-ID:300BA418-63ED-4C03-9031-263742ED522E
https://plugins.svn.wordpress.org/modern-events-calendar-lite/trunk/readme.txt
Related Vulnerabilities
WordPress Plugin Event Calendar WD-Responsive Event Calendar Cross-Site Scripting (1.1.42)
Dolibarr Unrestricted Upload of File with Dangerous Type Vulnerability (CVE-2020-14209)
LimeSurvey Unrestricted Upload of File with Dangerous Type Vulnerability (CVE-2018-1000658)
Jenkins Deserialization of Untrusted Data Vulnerability (CVE-2018-1999042)