Cluster Attribution Spoofing in Wazuh 5.0.0-beta1 by Wazuh
CVE-2026-67307

7HIGH

Key Information:

Vendor

Wazuh

Status
Wazuh
Vendor
CVE Published:
1 August 2026

What is CVE-2026-67307?

Wazuh version 5.0.0-beta1 contains a flaw that permits a low-privileged enrolled agent to manipulate the cluster attribution in inventory and vulnerability documents. This occurs due to inadequate validation of the cluster_name and cluster_node fields in Start FlatBuffer messages during inventory synchronization. As a result, attackers can spoof values associated with wazuh.cluster.name, which compromises the integrity of indexed inventory records. This vulnerability also poses a threat in multi-cluster deployments where numeric agent IDs may inadvertently collide, potentially allowing attackers to poison data across clusters.

Affected Version(s)

wazuh 0 < 5.0.0-beta3

wazuh 5.0.0-beta3

References

https://github.com/wazuh/wazuh/security/advisories/GHSA-j...
vendor-advisory
https://github.com/wazuh/wazuh/commit/b3dae02ec9ddcfd449c...
patch
https://www.vulncheck.com/advisories/wazuh-before-beta3-c...
third-party-advisory

CVSS V4

Score:
7
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

nasaa0x
.