CVE-2025-56218 File upload in n/a

Critical 9.8 Published 17 Oct 2025 Updated 5 Jul 2026

Attackers can execute arbitrary code by uploading a crafted PDF file to SigningHub.

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-2025-56218?

CVE-2025-56218 is a critical vulnerability in n/a, published on 17 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An arbitrary file upload vulnerability in SigningHub v8.6.8 allows attackers to execute arbitrary code via uploading a crafted PDF file.

Weakness: CWE-434

Which versions are affected by CVE-2025-56218?

It affects 1 product.

Products include Ascertia Signinghub.

How do I fix CVE-2025-56218?

No fix has been published for CVE-2025-56218 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-56218 being exploited?

There is no known exploitation of CVE-2025-56218 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Sources

Also known as GHSA-6q7w-f5gr-rwh8.