CVE-2026-74039

Wazuh 4.0.0 before 4.14.7 and 5.0.0-beta2 contain a denial of service vulnerability that allows authenticated attackers with allow_run_as enabled to exhaust CPU resources by submitting arbitrarily deeply nested JSON structures to the POST /security/user/authenticate/run_as endpoint. Attackers can repeatedly submit malformed auth_context bodies with unlimited nesting depth to cause the API framework to consume excessive CPU, denying service to all other API consumers.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/wazuh/wazuh/pull/37034
https://github.com/wazuh/wazuh/security/advisories/GHSA-5vh8-34r8-q74q
https://www.vulncheck.com/advisories/wazuh-api-dos-via-deeply-nested-json-auth-context
https://github.com/wazuh/wazuh/security/advisories/GHSA-5vh8-34r8-q74q

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-18 18:19

Updated : 2026-09-08 20:28

NVD link : CVE-2026-74039

Mitre link : CVE-2026-74039

CVE.ORG link : CVE-2026-74039

JSON object : View

Products Affected

No product.

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

CWE-1333

Inefficient Regular Expression Complexity

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