CVE-2025-56219

Incorrect access control in SigningHub v8.6.8 allows attackers to arbitrarily add user accounts without any rate limiting

High · published October 20, 2025

CVSS v3.1
7.1
EPSS
0%
Percentile
24.1
In the wild
Unconfirmed
What it is

⚡ An attacker can create user accounts at will in SigningHub v8.6.8, like a mischievous party crasher inviting friends to a bash! 🎉 Think of it as someone sneaking into a restaurant and placing unlimited reservations under fake names, completely clogging up the table list and leaving legitimate guests out in the cold. This vulnerability can lead to resource exhaustion, causing the service to slow down or crash completely. Imagine your favorite restaurant running out of tables because someone decided to book them all under fake identities! This Denial of Service (DoS) threat could render your document signing service completely unavailable.

Put simply

Think of it as someone sneaking into a restaurant and placing unlimited reservations under fake names, completely clogging up the table list and leaving legitimate guests out in the cold. Incorrect access control allows attackers to create user accounts without any rate limiting, making it easy to flood the system with fake accounts.

What to do

This vulnerability can lead to resource exhaustion, causing the service to slow down or crash completely. Imagine your favorite restaurant running out of tables because someone decided to book them all under fake identities! This Denial of Service (DoS) threat could render your document signing service completely unavailable. To mitigate this risk, update to the latest version of SigningHub, which addresses this vulnerability. Additionally, implement rate limiting and strict user validation measures to prevent abuse. Regularly monitor account creation logs for any suspicious activities. You've got this! Implement these fixes and ensure your service stays smooth and secure. 🛡️

The record
Technical detail
CVSS v3.1
7.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
CVSS v4.0
Not supplied
EPSS
0.00323 · 24.1th percentile
Published
2025-10-20T00:00Z
EPSS history
Timeline
  • 20 OCT 00:00Z
    Incorrect access control in SigningHub v8.6.8 allows attackers to arbitrarily add user accounts without any rate limiting
    cvelistv5