{"id":"CVE-2026-74039","aliases":["EUVD-2026-61075","GHSA-5vh8-34r8-q74q"],"status":"published","title":"Wazuh 4.0.0 \u003c 4.14.7 API DoS via Deeply Nested JSON auth_context","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.","severity":{"version":"4.0","score":7.1,"vector":"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00555,"percentile":0.46785,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1333","CWE-770"],"published":"2026-08-18T17:26:12Z","modified":"2026-10-28T02:30:53Z","products":[{"vendor":"wazuh","product":"wazuh"},{"vendor":"wazuh","product":"wazuh-manager"}],"references":[{"url":"https://github.com/wazuh/wazuh/security/advisories/GHSA-5vh8-34r8-q74q","tags":["vendor-advisory","exploit","Exploit","Mitigation","Vendor Advisory","advisory"]},{"url":"https://github.com/wazuh/wazuh/pull/37034","tags":["patch","Issue Tracking","Patch","fix"]},{"url":"https://www.vulncheck.com/advisories/wazuh-api-dos-via-deeply-nested-json-auth-context","tags":["third-party-advisory","Third Party Advisory","advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74039.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74039","tags":["advisory"]},{"url":"https://github.com/wazuh/wazuh","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-74039","title":"Wazuh 4.0.0 \u003c 4.14.7 API DoS via Deeply Nested JSON auth_context","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.","status":"published","published":"2026-08-18T17:26:12.871Z","modified":"2026-10-01T15:20:44.929Z","cvss":[{"version":"4.0","score":7.1,"vector":"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","level":"high","assessor":"cna"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-770","CWE-1333"],"updated_at":"2026-11-02T14:20:03.4818Z"}],"euvd":[{"id":"EUVD-2026-61075","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.","status":"published","published":"2026-08-18T17:26:12Z","modified":"2026-10-01T15:20:44Z","cvss":[{"version":"4.0","score":7.1,"vector":"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","level":"high"}],"updated_at":"2026-11-02T17:27:45.017929Z"}],"nvd":[{"id":"CVE-2026-74039","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.","status":"published","published":"2026-08-18T18:19:33.76Z","modified":"2026-10-22T22:10:00.25Z","cvss":[{"version":"4.0","score":7.1,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-770","CWE-1333"],"updated_at":"2026-11-02T14:12:38.976695Z"}],"osv":[{"id":"CVE-2026-74039","title":"Wazuh 4.0.0 \u003c 4.14.7 API DoS via Deeply Nested JSON auth_context","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.","status":"published","published":"2026-08-18T17:26:12.871Z","modified":"2026-10-28T02:30:53.489147435Z","cvss":[{"version":"4.0","score":7.1,"vector":"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","level":"high"}],"cwes":["CWE-1333","CWE-770"],"updated_at":"2026-11-02T15:45:16.365946Z"}]}}