CVE-2025-56218

CRITICAL
Published Oct 17, 2025 Modified Oct 27, 2025 CWE-434

Description

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

CVSS v3.1 Score

9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-434 Unrestricted Upload

Affected Products

Vendor Product
ascertia signinghub

References

Frequently Asked Questions

What is CVE-2025-56218? +
An arbitrary file upload vulnerability in SigningHub v8.6.8 allows attackers to execute arbitrary code via uploading a crafted PDF file. It has a CVSS v3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2025-56218? +
CVE-2025-56218 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.
What products are affected by CVE-2025-56218? +
CVE-2025-56218 affects products from ascertia, specifically: signinghub. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2025-56218? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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