{"id":"CVE-2026-67307","summary":"Wazuh before 5.0.0-beta3 Cluster Attribution Spoofing via Inventory Sync","details":"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.","aliases":["GHSA-jv5p-fhwh-9w55"],"modified":"2026-08-03T03:45:33.731561801Z","published":"2026-08-01T12:22:18.079Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-345"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67307.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67307.json"},{"type":"ADVISORY","url":"https://github.com/wazuh/wazuh/security/advisories/GHSA-jv5p-fhwh-9w55"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-67307"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/wazuh-before-beta3-cluster-attribution-spoofing-via-inventory-sync"},{"type":"FIX","url":"https://github.com/wazuh/wazuh/commit/b3dae02ec9ddcfd449cb61b4c76d180e3e43f79a"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/wazuh/wazuh","events":[{"introduced":"0"},{"fixed":"b3dae02ec9ddcfd449cb61b4c76d180e3e43f79a"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"5.0.0-beta3"}]}}],"versions":["v5.0.0-beta2","v5.0.0-beta1","issue-34476-fim-tests","v5.0.0-alpha0","v3.13.1","v3.13.0","v3.12.0","v3.8.0","v3.7.0","v3.6.1","v3.6.0","v3.5.0","v3.2.0","v3.1.0","v2.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-67307.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N"}]}