Vulnerability in Wazuh
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.
EPSS: 0.002 (9.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N.
Affected products
- Wazuh — versions 5.0.0-beta3, 5.0.0, 0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (Exploit, vendor-advisory, Mitigation, Vendor Advisory)
- disclosure@vulncheck.com (Patch, patch)
- disclosure@vulncheck.com (Exploit, Patch, Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-67307?
- CVE-2026-67307 is a medium-severity vulnerability in Wazuh, classified under Insufficient Verification of Data Authenticity. CVSS score: 6.3/10. Published 2026-08-01.
- How severe is CVE-2026-67307?
- Medium severity. CVSS v3 base score is 6.3 out of 10.