---
id: CVE-2025-56219
title: >-
  Incorrect access control in SigningHub v8.6.8 allows attackers to arbitrarily
  add user accounts without any rate limiting
summary: >-
  Incorrect access control in SigningHub v8.6.8 allows attackers to arbitrarily
  add user accounts without any rate limiting. This can lead to a resource
  exhaustion and a Denial of Service (DoS) when an excessively large number of
  user acco…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H'
cwe:
  - CWE-284
vendor: ascertia
product: signinghub
affected:
  - signinghub <= 8.6.8
published: '2025-10-20'
updated: '2026-07-05'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-56219'
references:
  - url: 'https://github.com/saykino/CVE-2025-56219'
    label: cve@mitre.org
tags:
  - nvd
  - exploit-available
epss: 0.00323
epssPercentile: 0.2287
ingestedAt: '2026-07-06T16:44:34.299Z'
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/saykino/CVE-2025-56219'
  checkedAt: '2026-09-27T10:33:34.953Z'
exploitAvailable: true
---

## Overview

Incorrect access control in SigningHub v8.6.8 allows attackers to arbitrarily add user accounts without any rate limiting. This can lead to a resource exhaustion and a Denial of Service (DoS) when an excessively large number of user accounts are created.

## Affected

- `signinghub <= 8.6.8`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.