POC详情： c7058bca3062e6dac210a36601c127d93e181209

来源
https://github.com/saykino/CVE-2025-56223
关联漏洞
标题： SigningHub 安全漏洞 (CVE-2025-56223)
描述：SigningHub是英国SigningHub公司的一个电子签名平台。 SigningHub v8.6.8版本存在安全漏洞，该漏洞源于组件/Home/UploadStreamDocument缺少速率限制，可能导致拒绝服务攻击。
介绍
# 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.

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CVSS Score: 7.1 (High)

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 Attack Type

 * Remote (Authenticated)
   
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 Affected Versions

* Versions before <= 8.6.8

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 Vendor of Product

*  Ascertia

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  Affected Product Code Base
  
* SigningHub

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  Affected Component
  
* Upload Document API (/Home/UploadStreamDocument).

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 Mitigations

* Implement rate-limit for the Upload Document API.
  
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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.

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 Fixed versions
 *  Versions after > 8.6.8 
 
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 Discovered By:
 * Yazan Abu-Nadi
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