CVE-2026-74039

{
  "id": "CVE-2026-74039",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-18T18:19:33.760",
  "lastModified": "2026-10-22T22:10:00.250",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "Wazuh 4.0.0 anterior a 4.14.7 y 5.0.0-beta2 contienen una vulnerabilidad de denegación de servicio que permite a atacantes autenticados con allow_run_as habilitado agotar los recursos de la CPU al enviar estructuras JSON anidadas arbitrariamente profundas al endpoint POST /security/user/authenticate/run_as. Los atacantes pueden enviar repetidamente cuerpos auth_context malformados con una profundidad de anidamiento ilimitada para hacer que el framework de la API consuma una CPU excesiva, denegando el servicio a todos los demás consumidores de la API."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Wazuh",
          "product": "wazuh-manager",
          "defaultStatus": "unaffected",
          "repo": "https://github.com/wazuh/wazuh",
          "packageURL": "pkg:github/wazuh/wazuh",
          "versions": [
            {
              "version": "4.0.0",
              "lessThan": "4.14.7",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "5.0.0-beta2",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV40": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "4.0",
          "vectorString": "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",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnAvailabilityImpact": "HIGH",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "subAvailabilityImpact": "NONE",
          "exploitMaturity": "NOT_DEFINED",
          "confidentialityRequirement": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "valueDensity": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED"
        }
      }
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    "cvssMetricV31": [
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        "source": "[email protected]",
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          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
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      }
    ],
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        "ssvcData": {
          "timestamp": "2026-08-18T18:45:23.398620Z",
          "id": "CVE-2026-74039",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
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          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
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  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        },
        {
          "lang": "en",
          "value": "CWE-1333"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
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  "references": [
    {
      "url": "https://github.com/wazuh/wazuh/pull/37034",
      "source": "[email protected]",
      "tags": [
        "Issue Tracking",
        "Patch"
      ]
    },
    {
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      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Mitigation",
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    },
    {
      "url": "https://www.vulncheck.com/advisories/wazuh-api-dos-via-deeply-nested-json-auth-context",
      "source": "[email protected]",
      "tags": [
        "Third Party Advisory"
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}