CVE-2021-47899: Mfscripts Yetishare File Hosting Script

Medium severity, CVSS 4.0. EPSS: 0.3% chance of exploitation in the next 30 days.

YetiShare File Hosting Script 5.1.0 contains a server-side request forgery vulnerability that allows attackers to read local system files through the remote file upload feature. Attackers can exploit the url parameter in the url_upload_handler endpoint to access sensitive files like /etc/passwd by using file:/// protocol.

Affected products

• Mfscripts Yetishare File Hosting Script: version v5.1.0 only

Published 2026-01-23. Last modified 2026-06-17.