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CVE-2026-59255

BloodHound Missing Authorization on Custom Node Management API

HIGH
7.1
CVSS Score
Published: July 15, 2026 at 05:03 PM UTC
Updated: October 24, 2026 at 09:10 PM UTC
2 products affected across 2 vendorsBloodhoundBloodHound

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Severity
HIGH7.1
Exploit prediction
EPSS 0.4%
SSVC
PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Bloodhound· Bloodhound Project
95%
v ≤ 9.4.0
BloodHound· Specterops
90%
0 ≤ v ≤ 9.4.00
Vendor states this is fixed in 8f790351349fd87bcb04377aba84cba6495825b3 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

Technical DescriptionExploitIssue Tracking
Source: cverecord
https://github.com/SpecterOps/BloodHound/issues/2910
Issue TrackingPatch
Source: cverecord
https://github.com/SpecterOps/BloodHound/pull/2989
Patch
Source: cverecord
https://github.com/SpecterOps/BloodHound/commit/8f790351349fd87bcb04377aba84cba6495825b3
Third Party Advisory
Source: cverecord
https://www.vulncheck.com/advisories/bloodhound-missing-authorization-on-custom-node-management-api

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.1HIGHVulnCheck
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-862

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