SpendeOnline.org WordPress Plugin Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the SpendeOnline.org WordPress plugin, affecting all versions through 3.0.1. The issue arises from inadequate input sanitization and output escaping of user-supplied attributes in the 'spendeonline' shortcode. 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

Users are advised to update the SpendeOnline.org WordPress plugin to version 3.0.2 or a newer patched version.