CVE-2026-85241: Improper Authorization in SpecterOps BloodHound
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.
CVSS v4.0
Score 5.3medium
Affected software
SpecterOps
BloodHound
cpe:2.3:a:specterops:bloodhound:*:*:*:*:*:*:*:*AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects the NewV2API function in the cmd/api/src/api/registration/v2.go file of the Graph Write Endpoint component in SpecterOps BloodHound versions up to 9.5.1. The flaw allows improper authorization, which can be triggered remotely. The vulnerability is addressed by a patch identified by commit 39d1276a63e95a7713f954dea632a19651d9cebb. Upgrading to versions 9.6.0-rc1, 9.6.0, or 9.7.0-rc3 resolves the issue.
Potential Impact
The vulnerability allows remote attackers to bypass proper authorization controls in the affected BloodHound component, potentially enabling unauthorized actions via the Graph Write Endpoint. The CVSS 4.0 base score is 5.3 (medium), reflecting network attack vector, low attack complexity, no privileges required, no user interaction, and low impacts on confidentiality, integrity, and availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
A fix is available. Users should upgrade BloodHound to version 9.6.0-rc1, 9.6.0, or 9.7.0-rc3 to remediate this vulnerability. No other mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-09-03T15:45:24.645Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a99f6b5acd9273b49907d9b
Added to database: 09/03/2026, 22:37:41 UTC
Last enriched: 09/07/2026, 11:58:08 UTC
Last updated: 10/18/2026, 06:48:20 UTC
Views: 71
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