What is CVE-2026-28220?

CVE-2026-28220 is a high-severity vulnerability in Wazuh, classified under Deserialization of Untrusted Data. CVSS score: 8.4/10. Published 2026-07-20.

How severe is CVE-2026-28220?

High severity. CVSS v3 base score is 8.4 out of 10.

Deserialization in Wazuh

CVE-2026-28220

Wazuh is a free and open source platform used for threat prevention, detection, and response. Prior to version 4.14.5, issues in the Cluster Distributed API (DAPI) handling allow a cluster peer, or any actor able to authenticate to the clu…

Vulnerability class: Insecure Deserialization

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

Affected products

Wazuh — versions >= 4.0.0, < 4.14.5

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-28220?: CVE-2026-28220 is a high-severity vulnerability in Wazuh, classified under Deserialization of Untrusted Data. CVSS score: 8.4/10. Published 2026-07-20.
How severe is CVE-2026-28220?: High severity. CVSS v3 base score is 8.4 out of 10.