Vulnerability · Published Jul 16, 2026 · Assigned by GitHub_M
CVE-2026-33754Wazuh: Unauthenticated cluster packet length leads to uncontrolled memory allocation (remote DoS)
Medium 6.5
In plain English
A medium-severity uncontrolled resource consumption in wazuh from wazuh. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).
Official description
Wazuh is a free and open source platform used for threat prevention, detection, and response. In versions 3.9.0 and above, prior to 4.14.5, a remote attacker can trigger memory exhaustion in the cluster protocol parser by sending a crafted message header with an arbitrarily large payload length. The length is trusted before authentication/decryption and used directly to allocate memory, allowing unauthenticated denial of service of the cluster service. This issue has been fixed in version 4.14.5.
Affected products (as reported)
Weakness: CWE-400 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/wazuh/wazuh/security/advisories/GHSA-476v-28pp-5wg9 x_refsource_CONFIRM