Medium severity · published Sep 24, 2026
CVE-2026-61811
Wazuh: Unbounded Recursion in os_xml `_getattributes()` Causes analysisd Worker Thread Stack Exhaustion
6.5
CVSS
0.4%
EPSS
No
On KEV
Description
Wazuh is an open-source security platform providing unified XDR and SIEM protection for endpoints and cloud workloads. From 3.8.0 until 4.14.7, the _getattributes() function in src/os_xml/os_xml.c recursively processes every XML attribute without a depth limit while allocating two large local buffers in each stack frame. An enrolled agent can submit a Windows EventChannel event containing an element with enough attributes to exhaust the analysisd worker-thread stack, trigger a segmentation fault, and interrupt log ingestion. The element-depth limit in _ReadElem() does not constrain the number of attributes on one element, so it does not prevent this condition. This issue is fixed in version 4.14.7.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 31% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WA
wazuh · wazuh
>= 3.8.0, < 4.14.7 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-61811
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-61811
github.com
https://github.com/wazuh/wazuh/commit/2ac70941c5980a5dd24ad8a0f2be559f840e6a67
github.com
https://github.com/wazuh/wazuh/pull/37147
github.com
https://github.com/wazuh/wazuh/releases/tag/v4.14.7
github.com
https://github.com/wazuh/wazuh/security/advisories/GHSA-9wv5-7qwx-m9w5
More from wazuh
9.9
CVE-2025-24016
Remote code execution in Wazuh server
9.9
CVE-2026-30893
Wazuh cluster sync path traversal in decompress_files() enables arbitrary file write and code execution from authenticated cluster peer
9.8
CVE-2024-32038
Wazuh is a free and open source platform used for threat prevention, detection, and response
9.8
CVE-2021-44079
In the wazuh-slack active response script in Wazuh 4.2.x before 4.2.5, untrusted user agents are passed to a curl command line, potentially resulting in remote code execution
9.3
CVE-2026-67308
Wazuh GitHub Actions Shell Injection via Fork Pull Request
