CVE-2026-67307

What it is

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.

At a glance

Exploitability

Can be exploited over the network with a low-privilege account. High risk of data tampering.

Exploit odds

0.2% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-08-01 13:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-09-01 15:41 UTC Last updatedMost recent change to the record

Details

Published

2026-08-01 13:17 UTC

Last modified

2026-09-01 15:41 UTC

Exploit probability

0.2% · EPSS, next 30 days

Weakness

CWE-345

Record status

Analyzed

Affected

• Wazuh 5.0.0

Attack profile CVSS 4.0 · 7.0

Attack vector

Network

Complexity

High

Attack requirements

Present

Privileges needed

Low

User interaction

None

Confidentiality

None

Integrity

High

Availability

None