CVE-2025-56223: Ascertia Signinghub

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

A lack of rate limiting in the component /Home/UploadStreamDocument of SigningHub v8.6.8 allows attackers to cause a Denial of Service (DoS) via uploading an excessive number of files.

Affected products

• Ascertia Signinghub: up to and including 8.6.8

Published 2025-10-20. Last modified 2026-07-05.