CVE-2026-74039

MEDIUM 6.5

Wazuh 4.0.0 < 4.14.7 API DoS via Deeply Nested JSON auth_context

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-770 CWE-1333
Vendor	wazuh
Product	wazuh-manager
Published	Aug 18, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

Wazuh / wazuh-manager

4.0.0 < 4.14.7 5.0.0-beta2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

🔍 APhuongKMA jepalfer