CVE-2026-67307

Wazuh 5.0.0-beta1 (fixed in 5.0.0-beta3) does not validate or override the cluster_name and cluster_node fields in inventory-sync Start FlatBuffer messages, while validating only the agentid against the authenticated agent identity. This allows a low-privileged enrolled agent to spoof cluster attribution in indexed inventory and vulnerability documents by forging wazuh.cluster.name values and influencing the document _id prefix, potentially tampering with inventory records or, in shared-indexer multi-cluster deployments, poisoning another cluster's records when numeric agent IDs collide.

CVSS v3 6.3 MEDIUM

6.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/wazuh/wazuh/commit/b3dae02ec9ddcfd449cb61b4c76d180e3e43f79a	Patch
https://github.com/wazuh/wazuh/security/advisories/GHSA-jv5p-fhwh-9w55	Exploit Mitigation Vendor Advisory
https://www.vulncheck.com/advisories/wazuh-before-beta3-cluster-attribution-spoofing-via-inventory-sync	Exploit Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:wazuh:wazuh:5.0.0:beta1:*:*:*:*:*:*

History

No history.

Information

Published : 2026-08-01 13:17

Updated : 2026-09-01 15:41

NVD link : CVE-2026-67307

Mitre link : CVE-2026-67307

CVE.ORG link : CVE-2026-67307

JSON object : View

Products Affected

wazuh

wazuh

CWE

CWE-345

Insufficient Verification of Data Authenticity

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