CVE-2026-74039: high-severity vulnerability in wazuh-manager
Wazuh 4.0.0 < 4.14.7 API DoS via Deeply Nested JSON auth_context
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.6%
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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
Wazuh · wazuh-managerRelated CVEs — wazuh-manager
In the same product, most dangerous first.
CVE-2025-15616HIGHWazuh Agent and Manager OS Command Injection and Untrusted Search PathEPSS 1.7%CVE-2026-74040CRITICALWazuh 3.9.0 before 4.14.8 Arbitrary File Overwrite RCE via process_files_from_workerEPSS 0.7%CVE-2026-74035HIGHWazuh 4.6.0 before 4.14.8 Authentication Bypass via Empty Password in update_userEPSS 0.6%CVE-2026-74044HIGHWazuh 4.0.0 < 4.14.6 Path Traversal Arbitrary Directory Deletion via Cluster HelloEPSS 0.6%CVE-2026-74046MEDIUMWazuh 4.4.0 < 4.14.7 DoS via fdecompress_files() Zip BombEPSS 0.6%CVE-2026-74038HIGHWazuh 4.0.0 < 4.14.6 Path Traversal DoS via Agent EnrollmentEPSS 0.5%