Ivory Search WordPress Plugin Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the Ivory Search WordPress Search Plugin, affecting all versions up to and including 5.5.13. The issue arises from inadequate input sanitization and output escaping, allowing authenticated attackers with administrator-level permissions to inject arbitrary web scripts into pages. These scripts are executed when a user accesses the compromised page. This vulnerability is present in multi-site installations where unfiltered_html has been disabled.

Impact

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

Reproduction

To reproduce this vulnerability, an authenticated user with administrator-level permissions can access the admin settings of the Ivory Search WordPress Search Plugin. Here, they can inject scripts into the settings, which will be executed when the corresponding page is accessed.

Remediation

Users are advised to update the Ivory Search WordPress Search Plugin to version 5.5.14 or later, where this vulnerability has been addressed.