Sphere Manager WordPress Plugin Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the Sphere Manager plugin for WordPress, affecting all versions through 1.0.2. The issue arises in the 'show_sphere_image' shortcode, where the 'width' parameter is not properly sanitized or escaped. This flaw 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.

Reproduction

To reproduce this vulnerability, an authenticated user with Contributor-level access or higher can use the 'show_sphere_image' shortcode and include a malicious script in the 'width' parameter. Once the shortcode is saved, the injected script will execute when the page is accessed.

Remediation

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