CVE-2026-59255: Missing Authorization in SpecterOps BloodHound
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.
AI Analysis
Technical Summary
CVE-2026-59255 is a missing authorization vulnerability in SpecterOps BloodHound through version 9.4.0. The issue exists in the custom-nodes API endpoints, which lack proper authorization controls. Authenticated users can exploit this by invoking unprotected POST, PUT, and DELETE requests to modify the global graph schema, impacting all users and tenants. The vulnerability was fixed in commit 8f79035, but no explicit vendor advisory or patch release is referenced in the provided data.
Potential Impact
An attacker with a valid session token and low privileges can modify the global graph schema by creating, updating, or deleting custom node types. This affects all users and tenants of the BloodHound instance, potentially leading to unauthorized changes in the application’s data model and impacting data integrity and trustworthiness.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. The vulnerability was fixed in commit 8f79035, so applying the corresponding update or patch from SpecterOps is recommended once available. Until then, restrict access to authenticated users and monitor for suspicious API activity related to custom-nodes endpoints.
CVE-2026-59255: Missing Authorization in SpecterOps BloodHound
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.
CVSS v4.0
Score 7.1high
Affected software
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-59255 is a missing authorization vulnerability in SpecterOps BloodHound through version 9.4.0. The issue exists in the custom-nodes API endpoints, which lack proper authorization controls. Authenticated users can exploit this by invoking unprotected POST, PUT, and DELETE requests to modify the global graph schema, impacting all users and tenants. The vulnerability was fixed in commit 8f79035, but no explicit vendor advisory or patch release is referenced in the provided data.
Potential Impact
An attacker with a valid session token and low privileges can modify the global graph schema by creating, updating, or deleting custom node types. This affects all users and tenants of the BloodHound instance, potentially leading to unauthorized changes in the application’s data model and impacting data integrity and trustworthiness.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. The vulnerability was fixed in commit 8f79035, so applying the corresponding update or patch from SpecterOps is recommended once available. Until then, restrict access to authenticated users and monitor for suspicious API activity related to custom-nodes endpoints.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-07-04T12:17:14.301Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a57c45368715ace431fb2a6
Added to database: 07/15/2026, 17:33:07 UTC
Last enriched: 07/15/2026, 17:47:42 UTC
Last updated: 07/15/2026, 18:33:10 UTC
Views: 5
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.