Arbitrary File Upload Vulnerability in SigningHub by Ascertia
CVE-2025-56218

9.8CRITICAL

Key Information:

Vendor

Ascertia

Status
SigningHub
Vendor
CVE Published:
17 October 2025

What is CVE-2025-56218?

An arbitrary file upload vulnerability exists in SigningHub v8.6.8 that enables attackers to upload maliciously crafted PDF files. Exploiting this flaw allows unauthorized execution of arbitrary code, potentially compromising the integrity of the system and exposing sensitive data. This vulnerability emphasizes the importance of robust validation mechanisms for file uploads to safeguard against such threats.

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References

http://ascertia.com
http://signinghub.com
https://github.com/saykino/CVE-2025-56218

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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