CVE-2026-67307 Wazuh before 5.0.0-beta3 Cluster Attribution Spoofing via Inventory Sync
A low-privileged agent can spoof cluster attribution in inventory records by forging cluster fields, potentially tampering with data or poisoning other clusters.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-67307?
CVE-2026-67307 is a high-severity missing authorization vulnerability in Wazuh Wazuh, published on 1 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-345
Which versions are affected by CVE-2026-67307?
It affects 1 product.
Products include Wazuh Wazuh.
How do I fix CVE-2026-67307?
No fix has been published for CVE-2026-67307 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-67307 being exploited?
There is no known exploitation of CVE-2026-67307 in the wild and no public exploit code.
Other vulnerabilities in Wazuh Wazuh
- CVE-2025-24016 Wazuh Server Deserialization of Untrusted Data
- CVE-2024-32038 Wazuh Analysis Engine Event Decoder Heap-based Buffer Overflow Remote Code Execution Vulnerability
- CVE-2021-44079 Command injection in n/a
- CVE-2024-1243 Remote code execution and local privilege escalation in Wazuh Windows agent via NetNTLMv2 hash theft
- CVE-2026-61800 Wazuh cluster worker file sync allows arbitrary file write under /var/ossec (incomplete fix for CVE-2026-30893)
Sources
Also known as GHSA-jv5p-fhwh-9w55, GHSA-v7qc-fpqm-p46f.