Denial of Service Vulnerability in SigningHub by Ascertia
CVE-2025-56223

7.5HIGH

Key Information:

Vendor

Ascertia

Status
SigningHub
Vendor
CVE Published:
20 October 2025

What is CVE-2025-56223?

The SigningHub platform version 8.6.8 contains a vulnerability due to a lack of rate limiting in the /Home/UploadStreamDocument component. This flaw permits attackers to execute a Denial of Service (DoS) attack by uploading an excessive number of files, leading to degradation or complete shutdown of service functionality. Organizations using this software should apply mitigation strategies to secure their systems against potential exploitation.

References

http://ascertia.com
http://signinghub.com
https://github.com/saykino/CVE-2025-56223

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-56223 : Denial of Service Vulnerability in SigningHub by Ascertia