CVE-2026-33947

{
  "id": "CVE-2026-33947",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-13T22:16:29.157",
  "lastModified": "2026-10-26T21:10:00.170",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "jq is a command-line JSON processor. In versions 1.8.1 and below, functions jv_setpath(), jv_getpath(), and delpaths_sorted() in jq's src/jv_aux.c use unbounded recursion whose depth is controlled by the length of a caller-supplied path array, with no depth limit enforced. An attacker can supply a JSON document containing a flat array of ~65,000 integers (~200 KB) that, when used as a path argument by a trusted jq filter, exhausts the C call stack and crashes the process with a segmentation fault (SIGSEGV). This bypass works because the existing MAX_PARSING_DEPTH (10,000) limit only protects the JSON parser, not runtime path operations where arrays can be programmatically constructed to arbitrary lengths. The impact is denial of service (unrecoverable crash) affecting any application or service that processes untrusted JSON input through jq's setpath, getpath, or delpaths builtins. This issue has been addressed in commit fb59f1491058d58bdc3e8dd28f1773d1ac690a1f."
    },
    {
      "lang": "es",
      "value": "jq es un procesador JSON de línea de comandos. En las versiones 1.8.1 e inferiores, las funciones jv_setpath(), jv_getpath() y delpaths_sorted() en src/jv_aux.c de jq utilizan recursión ilimitada cuya profundidad está controlada por la longitud de un array de ruta proporcionado por el llamador, sin un límite de profundidad aplicado. Un atacante puede proporcionar un documento JSON que contiene un array plano de ~65.000 enteros (~200 KB) que, cuando se usa como argumento de ruta por un filtro jq de confianza, agota la pila de llamadas de C y bloquea el proceso con un fallo de segmentación (SIGSEGV). Este bypass funciona porque el límite existente MAX_PARSING_DEPTH (10.000) solo protege el analizador JSON, no las operaciones de ruta en tiempo de ejecución donde los arrays pueden construirse programáticamente a longitudes arbitrarias. El impacto es denegación de servicio (bloqueo irrecuperable) que afecta a cualquier aplicación o servicio que procesa entrada JSON no confiable a través de las funciones integradas setpath, getpath o delpaths de jq. Este problema ha sido abordado en el commit fb59f1491058d58bdc3e8dd28f1773d1ac690a1f."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "jqlang",
          "product": "jq",
          "versions": [
            {
              "version": "< fb59f1491058d58bdc3e8dd28f1773d1ac690a1f",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 6.2,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 3.6
      },
      {
        "source": "[email protected]",
        "type": "Primary",
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          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
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    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-04-14T13:45:08.694594Z",
          "id": "CVE-2026-33947",
          "options": [
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              "exploitation": "poc"
            },
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              "automatable": "no"
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          "role": "CISA Coordinator",
          "version": "2.0.3"
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  "weaknesses": [
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      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-674"
        }
      ]
    }
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  "references": [
    {
      "url": "https://github.com/jqlang/jq/commit/fb59f1491058d58bdc3e8dd28f1773d1ac690a1f",
      "source": "[email protected]",
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    },
    {
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      "source": "[email protected]",
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    {
      "url": "http://www.openwall.com/lists/oss-security/2026/04/16/1",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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