Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Wazuh cluster DAPI arbitrary callable deserialization and RBAC context injection allow a cluster peer to execute privileged functions on the master node
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L H N C H H H 9.1 .0040 32.9 —
AFFECTED
Product Versions Fixed
wazuh >= 4.0.0, < 4.14.5 – —
TIMELINE
Feb 25 Reserved by GitHub_M
Jul 20 EXPLOIT PUBLISHED — CVE-2026-28220 (wazuh). Public exploit reference added.
Jul 20 Published (CNA: GitHub_M)
Description
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 cluster channel using the shared cluster key, to make the master node deserialize an attacker-controlled callable and execute it under an attacker-controlled RBAC context. The cluster code in `framework/wazuh/core/cluster/common.py` deserializes JSON with `as_wazuh_object()`, which resolves any callable whose top-level package is wazuh or api (an overly broad allowlist controlled only by `ALLOWED_CALLABLES_PACKAGES`), and DAPI requests handled in framework/wazuh/core/cluster/dapi/dapi.py accept a client-supplied rbac_permissions value that `run_local()` applies as the global RBAC context, so supplying an rbac_mode of black causes authorization checks for expose_resources-protected functions to pass without any legitimate permission assignment. Combined, these allow privileged administrative actions on the master node such as arbitrary file writes under WAZUH_PATH, creation of new API users, and tampering with security.yaml, and can be chained into full manager compromise. This issue has been fixed in version 4.14.5.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| February 25, 2026 | Reserved | Reserved by GitHub_M |
| July 20, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-28220 (wazuh). Public exploit reference added. |
| July 20, 2026 | Published | Published (CNA: GitHub_M) |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| wazuh | wazuh | — | >= 4.0.0, < 4.14.5 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-28220 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.