CVE-2026-59255

BloodHound Missing Authorization on Custom Node Management API

Published Jul 15, 2026 CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Bloodhound Project
Bloodhound Project bloodhound
CPEs cpe:2.3:a:bloodhound_project:bloodhound:*:*:*:*:*:*:*:*
Vendors & Products Bloodhound Project
Bloodhound Project bloodhound
Type Values Removed Values Added
First Time appeared Specterops
Specterops bloodhound
Vendors & Products Specterops
Specterops bloodhound
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title BloodHound Missing Authorization on Custom Node Management API
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L'}

cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Sep 17, 2026, 6:57 PM
Reserved
Jul 4, 2026, 12:17 PM
Status
Deferred
Published
Jul 15, 2026, 6:16 PM
Modified
Oct 24, 2026, 9:10 PM