CVE-2025-56219: Ascertia Signinghub

High severity, CVSS 7.1. EPSS: 0.3% chance of exploitation in the next 30 days.

Incorrect access control in SigningHub v8.6.8 allows attackers to arbitrarily add user accounts without any rate limiting. This can lead to a resource exhaustion and a Denial of Service (DoS) when an excessively large number of user accounts are created.

Affected products

• Ascertia Signinghub: up to and including 8.6.8

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