CVE-2025-56223 Denial of service in n/a

High 7.5 Published 20 Oct 2025 Updated 5 Jul 2026

Attackers can cause a Denial of Service by uploading excessive files due to missing rate limiting in the document upload component.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-56223?

CVE-2025-56223 is a high-severity denial of service vulnerability in n/a, published on 20 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-770

Which versions are affected by CVE-2025-56223?

It affects 1 product.

Products include Ascertia Signinghub.

How do I fix CVE-2025-56223?

No fix has been published for CVE-2025-56223 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2025-56223 being exploited?

There is no known exploitation of CVE-2025-56223 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Sources

Also known as GHSA-4r59-7pwm-p489.