High severity · published Aug 19, 2026
CVE-2026-44901
Wazuh Cluster DAPI Protocol Deserialization of Untrusted Data Remote Code Execution Vulnerability
8.4
CVSS
0.7%
EPSS
No
On KEV
Description
Wazuh is a free and open source platform used for threat prevention, detection, and response. From 4.0.0 until 4.14.6 and 5.0.0-beta2, AffectedItemsWazuhResult.merge() in framework/wazuh/core/results.py trusts the sort_casting field in a cluster worker's JSON response. During a distributed API merge, attacker-controlled type names are resolved through Python builtins without an allowlist. A compromised worker can set sort_casting to exec and place Python source in affected_items, causing the master to execute the payload as root when responses from multiple nodes are merged. This issue is fixed in versions 4.14.6 and 5.0.0-beta2.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 55% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WA
wazuh · wazuh
>= 4.0.0, < 4.14.6; >= 5.0.0-beta1, < 5.0.0-beta2 · source: vendor, NVD
In the news
VulnerabilityCritical
ZDI-26-527: Wazuh Cluster DAPI Protocol Deserialization of Untrusted Data Remote Code Execution Vulnerability
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Wazuh. An attacker must first obtain the ability to execute low-privileged code on a worker node in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 9.9. The following CVEs are assigned: CVE-2026-44901.
Aug 11, 2026·Zero Day Initiative
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-44901
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-44901
Patch
https://github.com/wazuh/wazuh/commit/b29849f8abb08d78f257e6106b6111a8a1b0e621
Issue Tracking
https://github.com/wazuh/wazuh/pull/35757
Patch
https://github.com/wazuh/wazuh/releases/tag/v4.14.6
Patch
https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2
Exploit
https://github.com/wazuh/wazuh/security/advisories/GHSA-8c6v-7g3w-prrq
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