TI-2026-42395 Aliases CVE-2026-59255 GHSA-7qmq-x64g-8v7j

BloodHound Missing Authorization on Custom Node Management API

MEDIUM 64CWE-862Published 2026-07-15 · Updated 2026-09-17

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Security bypass
Confidentiality · integrity · availability: None · High · Low
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.

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 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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00439 38th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix Fixed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
SpecterOps	BloodHound	up to 9.4.0	—	Patch available	CNA

BloodHound VendorSpecterOps Affected up to 9.4.0 Fixed in — Patch available CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-59255
2026-10-03 Alias added: GHSA-7qmq-x64g-8v7j

References

Exploit 1

Researcher Disclosure

Patch 2

TI-2026-58561 SpecterOps BloodHound Graph Write Endpoint v2.go NewV2API improper authorization CVSS 4.0MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences