Events In City WordPress Plugin Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the Events In City WordPress plugin, affecting versions 3.0 and prior. The issue arises from inadequate input sanitization and output escaping of user-supplied attributes in the 'org-events' shortcode. Specifically, attributes such as 'organizer_id', 'width', 'height', 'transparency', 'header', 'border', and 'layout' are directly concatenated into HTML without proper escaping. This vulnerability allows authenticated attackers with contributor-level access or higher to inject arbitrary scripts into pages, which are executed when users view the affected page.

Impact

Exploitation of this vulnerability allows for stored cross-site scripting, where injected scripts are executed in the context of the user viewing the page.

Remediation

There is no known patch available for this vulnerability. Users are advised to review the vulnerability details and consider uninstalling the affected plugin.