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CVE-2025-56223 — Documentation of CVE-2025-56223, a denial-of-service vulnerability in Ascertia SigningHub's Upload Document API, allowing unrestricted file uploads leading to resource exhaustion. | Kitploit
Tools/GitHubGitHub/saykino/cve-2025-56223
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GitHubsaykino/cve-2025-56223

CVE-2025-56223

Documentation of CVE-2025-56223, a denial-of-service vulnerability in Ascertia SigningHub's Upload Document API, allowing unrestricted file uploads leading to resource exhaustion.

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10 months agoNot yet reviewed

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CVE-2025-56223 Denial of Service – Upload Document API

Description

An attacker can rapidly upload a large volume of files to cause denial of service.

CVSS Score: 7.1 (High)

Attack Type

  • Remote (Authenticated)

Affected Versions

  • Versions before <= 8.6.8

Vendor of Product

  • Ascertia

Affected Product Code Base

  • SigningHub

Affected Component

  • Upload Document API (/Home/UploadStreamDocument).

Mitigations

  • Implement rate-limit for the Upload Document API.

Vulnerability Details

  • The file upload functionality does not enforce any rate limiting or throttling, allowing users to upload files at an unrestricted rate. An attacker can exploit this behavior to rapidly upload a large volume of files, potentially leading to resource exhaustion such as disk space depletion, increased server load, or degraded performance.

Fixed versions

  • Versions after > 8.6.8

Discovered By:

  • Yazan Abu-Nadi
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