{"schemaVersion":3,"id":"CVE-2026-28220","aliases":[],"status":"published","duplicateOf":null,"title":"Wazuh cluster DAPI arbitrary callable deserialization and RBAC context injection allow a cluster peer to execute privileged functions on the master node","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.","dates":{"published":"2026-07-20T15:26:13.036Z","modified":"2026-07-20T17:30:46.933Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.1,"severity":"critical","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":8.4,"severity":"high","vector":"CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":9.1,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00656,"percentile":0.50799,"severity":"low","asOf":"2026-10-22T00:00:00.000Z","change":{"pp":0.26,"baselineDate":"2026-09-22T00:00:00.000Z","baselineScore":0.00396},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00396,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00396,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00396,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00396,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00396,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00396,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00396,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00396,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00396,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00396,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-22T00:00:00.000Z","score":0.00656,"percentile":0.50799}],"last30":[{"date":"2026-09-22T00:00:00.000Z","score":0.00396,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00396,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00656,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","sc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