CVE-2026-74039: Allocation of Resources Without Limits or Throttling in Wazuh wazuh-manager
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.
AI Analysis
Technical Summary
CVE-2026-74039 is a denial of service vulnerability in Wazuh wazuh-manager affecting versions 4.0.0 before 4.14.7 and 5.0.0-beta2. The flaw allows authenticated users with allow_run_as enabled to submit arbitrarily deeply nested JSON structures to the POST /security/user/authenticate/run_as endpoint. The API framework processes these malformed auth_context bodies without limits or throttling, resulting in excessive CPU resource consumption and denial of service to other API consumers.
Potential Impact
Exploitation of this vulnerability allows an authenticated attacker with allow_run_as privileges to exhaust CPU resources on the wazuh-manager, causing denial of service conditions that prevent legitimate API users from accessing the service.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict allow_run_as permissions to trusted users only and monitor for unusual API usage patterns involving deeply nested JSON payloads.
CVE-2026-74039: Allocation of Resources Without Limits or Throttling in Wazuh wazuh-manager
Description
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 v4.0
Score 7.1high
Affected software
pkg:github/wazuh-managerRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-74039 is a denial of service vulnerability in Wazuh wazuh-manager affecting versions 4.0.0 before 4.14.7 and 5.0.0-beta2. The flaw allows authenticated users with allow_run_as enabled to submit arbitrarily deeply nested JSON structures to the POST /security/user/authenticate/run_as endpoint. The API framework processes these malformed auth_context bodies without limits or throttling, resulting in excessive CPU resource consumption and denial of service to other API consumers.
Potential Impact
Exploitation of this vulnerability allows an authenticated attacker with allow_run_as privileges to exhaust CPU resources on the wazuh-manager, causing denial of service conditions that prevent legitimate API users from accessing the service.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict allow_run_as permissions to trusted users only and monitor for unusual API usage patterns involving deeply nested JSON payloads.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-14T14:06:40.512Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a849b61c6e8be03328d7583
Added to database: 08/18/2026, 17:50:25 UTC
Last enriched: 08/18/2026, 18:04:30 UTC
Last updated: 09/09/2026, 22:52:14 UTC
Views: 56
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