CVE-2026-56699
Agent-to-manager NDJSON injection in Wazuh allows admin-level OpenSearch operations.
Is CVE-2026-56699 being exploited?
Not confirmed. CVE-2026-56699 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked.
How severe is CVE-2026-56699?
CVE-2026-56699 is rated Critical with a CVSS score of 10.0. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-56699?
Yes. A fix has been recorded for CVE-2026-56699. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-56699 affect?
CVE-2026-56699 affects Wazuh Manager < 5.0.0-beta3, OpenSearch clusters managed by Wazuh, Enrolled Wazuh agents. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-56699?
Upgrade Wazuh Manager to 5.0.0-beta3+, revoke/reissue agent creds, audit indices and alerts
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Enrolled agents can inject NDJSON into OpenSearch bulk requests to execute delete/index/update as manager admin, enabling data deletion and alert tampering.
Immediate action required