All vulnerabilities
CVE-2026-61811GHSA-9wv5-7qwx-m9w5

Wazuh: Unbounded Recursion in os_xml `_getattributes()` Causes analysisd Worker Thread Stack Exhaustion

wazuh wazuh
Open in ThreatlineRecord JSON
CVSS
6.5Medium
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 24 Sep 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.37%Chance of exploitation activity in the next 30 days, higher than 29% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published24 Sep 2026Updated 24 Sep 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

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.

Text from CVE List

Affected versions 1

  • wazuhaffected: >= 3.8.0, < 4.14.7CVE List

References 4