CVE-2026-74039 (GCVE-0-2026-74039)
Vulnerability from cvelistv5 – Published: 2026-08-18 17:26 – Updated: 2026-10-01 15:20
VLAI
EPSS
VEX
Title
Wazuh 4.0.0 < 4.14.7 API DoS via Deeply Nested JSON auth_context
Summary
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.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 18:45 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/wazuh/wazuh/security/advisorie… | vendor-advisory |
| https://github.com/wazuh/wazuh/pull/37034 | patch |
| https://www.vulncheck.com/advisories/wazuh-api-do… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Wazuh | wazuh-manager |
Affected:
4.0.0 , < 4.14.7
(semver)
Affected: 5.0.0-beta2 (semver) cpe:2.3:a:wazuh:wazuh:*:*:*:*:*:*:*:* cpe:2.3:a:wazuh:wazuh:5.0.0-beta2:*:*:*:*:*:*:* |
Date Public
2026-08-18 00:00
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Nomenclature
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
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model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.