CVE-2026-44901
Wazuh cluster merge vulnerability allows master RCE via malicious worker response.
Is CVE-2026-44901 being exploited?
Not confirmed. CVE-2026-44901 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. EPSS currently estimates a 0.67% probability of exploitation in the next 30 days.
How severe is CVE-2026-44901?
CVE-2026-44901 is rated High with a CVSS score of 8.4. 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-2026-44901?
Yes. A fix has been recorded for CVE-2026-44901. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-44901 affect?
CVE-2026-44901 affects Wazuh manager (clustered) versions 4.0.0–4.14.5, Wazuh 5.0.0-beta1 (pre-fix). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-44901?
Upgrade managers to 4.14.6 or 5.0.0-beta2; isolate/untrust compromised workers.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution as root on Wazuh manager by a compromised cluster worker sending crafted sort_casting and payload.
Immediate action required
- affected>= 4.0.0 and < 4.14.6
- affected>= 5.0.0-beta1 and < 5.0.0-beta2
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.