Vulnerability 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 Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/SpecterOps/BloodHound/commit/8f790351349fd87bcb04377aba84cba6
- https://github.com/SpecterOps/BloodHound/issues/2910
- https://github.com/SpecterOps/BloodHound/pull/2989
- https://www.vulncheck.com/advisories/bloodhound-missing-authorization-on-custom-
FAQ
What is CVE-2026-59255?
CVE-2026-59255 is a vulnerability with a CVSS score of 7.1 (HIGH). 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...
How severe is CVE-2026-59255?
CVE-2026-59255 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-59255?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.