Description
WordPress Plugin Event Organiser 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 Event Organiser version 2.12.4 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 2.12.5 or latest
References
https://make.wordpress.org/plugins/2015/04/20/fixing-add_query_arg-and-remove_query_arg-usage/
http://wp-event-organiser.com/blog/announcements/xss-vulnerability-event-organiser-extensions/
Related Vulnerabilities
Oracle Application Server CVE-2006-0290 Vulnerability (CVE-2006-0290)
MySQL CVE-2013-1555 Vulnerability (CVE-2013-1555)
SharePoint Unrestricted Upload of File with Dangerous Type Vulnerability (CVE-2020-1102)
WordPress Plugin Simple Flash Video Cross-Site Scripting (1.7)
Contao Improper Privilege Management Vulnerability (CVE-2025-57759)