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CVE-2026-59255

BloodHound Missing Authorization on Custom Node Management API

CVSS 4.0 7.1 HIGHCVSS 3.1 7.1 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-59255

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-59255

Published

BloodHound

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "SpecterOps",
                    "product": "BloodHound",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:github/SpecterOps/BloodHound",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThanOrEqual": "9.4.0"
                        },
                        {
                            "status": "unaffected",
                            "version": "8f790351349fd87bcb04377aba84cba6495825b3",
                            "versionType": "git"
                        }
                    ],
                    "repo": "https://github.com/SpecterOps/BloodHound"
                }

Original source record · Cite this exact observation · Complete original publisher JSON