CVE-2026-85241

SpecterOps BloodHound Graph Write Endpoint v2.go NewV2API improper authorization

State: Published
Severity: 5.3 Medium
Published: Sep 3, 2026
Updated: Sep 4, 2026
Reserved: Sep 3, 2026

Description

A weakness has been identified in SpecterOps BloodHound up to 9.5.1. The affected element is the function NewV2API of the file cmd/api/src/api/registration/v2.go of the component Graph Write Endpoint. Executing a manipulation can lead to improper authorization. It is possible to launch the attack remotely. Upgrading to version 9.6.0-rc1, 9.6.0 and 9.7.0-rc3 is sufficient to fix this issue. This patch is called 39d1276a63e95a7713f954dea632a19651d9cebb. You should upgrade the affected component.

Scores

CVSS	Score	Vector	Source
4.0	5.3 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X	VulDB
3.1	6.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C	VulDB
3.0	6.3 Medium	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C	VulDB
2.0	6.5 Medium	AV:N/AC:L/Au:S/C:P/I:P/A:P/E:ND/RL:OF/RC:C	VulDB

Weaknesses

CWE-285 Improper Authorization
CWE-266 Incorrect Privilege Assignment

Affected Products

Product	Versions
BloodHoundSpecterOps	9.0.0Affected 9.1.0Affected 9.2.2Affected 9.4.0Affected 9.5.0Affected 9.5.1Affected 9.6.0-rc1Not affected 9.6.0Not affected 9.7.0-rc3Not affected

References

VDB-398471 | SpecterOps BloodHound Graph Write Endpoint v2.go NewV2API improper authorizationvdb-entrytechnical-description
VDB-398471 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
CVE-2026-85241 | CVE Analysis and Reportthird-party-advisory
Submit #894488 | SpecterOps BloodHound 9.4.0 Improper Authorizationthird-party-advisory
https://github.com/SpecterOps/BloodHound/commit/39d1276a63e95a7713f954dea632a19651d9cebbpatch
https://github.com/SpecterOps/BloodHound/releases/tag/v9.6.0-rc1patch
https://github.com/SpecterOps/BloodHound/product

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