---
id: CVE-2026-59255
title: >-
  BloodHound through 9.4.0, fixed in commit 8f79035, contains a missing
  authorization vulnerability in the custom-nodes API endpoints that allows any
  authenticated user to modify the global graph schema
summary: >-
  BloodHound through 9.4.0, fixed in commit 8f79035, contains a missing
  authorization vulnerability in the custom-nodes API endpoints that allows any
  authenticated user to modify the global graph schema. Attackers with valid
  session tokens…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L'
cwe:
  - CWE-862
vendor: SpecterOps
product: BloodHound
affected:
  - BloodHound <= 9.4.0
published: '2026-07-15'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T18:16:53.290'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-59255'
references:
  - url: >-
      https://github.com/SpecterOps/BloodHound/commit/8f790351349fd87bcb04377aba84cba6495825b3
    label: disclosure@vulncheck.com
  - url: 'https://github.com/SpecterOps/BloodHound/issues/2910'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/SpecterOps/BloodHound/pull/2989'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/bloodhound-missing-authorization-on-custom-node-management-api
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-07-15T18:03:35.694495Z'
epss: 0.00439
epssPercentile: 0.37631
ingestedAt: '2026-09-17T18:25:15.977Z'
---

## Overview

BloodHound through 9.4.0, fixed in commit 8f79035, contains a missing authorization vulnerability in the custom-nodes API endpoints that allows any authenticated user to modify the global graph schema. Attackers with valid session tokens can create, update, or delete custom node types affecting all users and tenants by invoking unprotected POST, PUT, and DELETE operations on the custom-nodes endpoints.

## Remediation

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