Paper/Archive/CVE-2026-49441

CVE-2026-49441

wazuh wazuh — Wazuh : peer-controlled metadata key in process_files_from_worker non-merged branch allows arbitrary file write under WAZUH_PATH on Wazuh manager

EPSS 0.8%CVSS 9.1

critical.is priorityof 100

CVSS 9.1 (CNA)9.1 / 10 × 3027.3 Not in CISA KEV+300.0 EPSS percentile 55.8.558 × 2011.2 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

Wazuh is a free and open source platform used for threat prevention, detection, and response. From 4.3.0 until 4.14.6 and 5.0.0-beta3, the non-merged branch of process_files_from_worker() in framework/wazuh/core/cluster/master.py trusts a peer-controlled file_path key from files_metadata.json. The destination is joined to WAZUH_PATH without proving that it remains inside the directory selected by cluster_item_key. A cluster peer holding the shared Fernet key can upload a crafted extra-valid archive and overwrite security-sensitive files such as /var/ossec/etc/ossec.conf. Replacing ossec.conf can configure root-executed commands and lead to code execution after a service reload. This issue is fixed in versions 4.14.6 and 5.0.0-beta3.

Affected

ProductAffectedFixed inSource

wazuh>= 4.3.0, < 4.14.6–CNA

wazuh>= 5.0.0-beta1, < 5.0.0-beta3–CNA

Scores by source

GitHub_M (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refgithub.com/wazuh/wazuh/security/advisories/GHSA-3v57-hgvj-3vj2 refgithub.com/wazuh/wazuh/pull/36296 refgithub.com/wazuh/wazuh/commit/7f13682cf5f01f69452f723a608ab2d89cfb2133 refgithub.com/wazuh/wazuh/releases/tag/v4.14.6 refgithub.com/wazuh/wazuh/releases/tag/v5.0.0-beta3