CVE-2023-4636: Userprivatefiles WordPress File Sharing Plugin

Medium severity, CVSS 4.8. EPSS: 1% chance of exploitation in the next 30 days.

The WordPress File Sharing Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in versions up to, and including, 2.0.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Affected products

• Userprivatefiles WordPress File Sharing Plugin: up to and including 2.0.3

Published 2023-09-05. Last modified 2026-06-17.