CVE-2025-56224 PoC — SigningHub 安全漏洞

Source

https://github.com/saykino/CVE-2025-56224

Associated Vulnerability

Title: SigningHub 安全漏洞 (CVE-2025-56224)
Description:A lack of rate limiting in the One-Time Password (OTP) verification endpoint of SigningHub v8.6.8 allows attackers to bypass verification via a bruteforce attack.

Readme

# CVE-2025-56224 (OTP) verification Bypass

# Description

an attacker can impersonate another user mobile number and use this vulnerability to verify the number without knowing the OTP code.

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# CVSS Score: 8.1 (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
  
* Mobile number verification function.

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 Mitigations

* Revoke the OTP code if a number of attempt passed certain value.
  
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Vulnerability Details

* The application does not enforce proper rate limiting on the One-Time Password (OTP) verification endpoint. This allows an attacker to automate and brute-force OTP codes without restriction. By sending a high volume of OTP guesses in rapid succession, an attacker can potentially bypass the OTP verification mechanism of the mobile number.

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

File Snapshot

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