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CVE-2020-4706

Estado: ModificadaMedia (5.4)—

IBM API Connect 5.0.0.0 through 5.0.8.10 is vulnerable to HTTP header injection, caused by improper validation of input by the HOST headers. By sending a specially crafted HTTP request, a remote attacker could exploit this vulnerability to inject HTTP HOST header, which will allow the attacker to conduct various attacks against the vulnerable system, including cross-site scripting, cache poisoning or session hijacking. IBM X-Force ID: 187194.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

IBM — API Connect

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2020-4706",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 4.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Secondary",
        "source": "psirt@us.ibm.com",
        "cvssData": {
          "scope": "UNCHANGED",
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    "cvssMetricV31": [
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      "affectedData": [
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          "vendor": "IBM",
          "product": "API Connect",
          "versions": [
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              "version": "5.0.0.0"
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              "status": "affected",
              "version": "5.0.8.10"
            }
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  ],
  "published": "2021-08-17T14:15:07.323",
  "references": [
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      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/187194",
      "tags": [
        "VDB Entry"
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      "source": "psirt@us.ibm.com"
    },
    {
      "url": "https://www.ibm.com/support/pages/node/6481879",
      "tags": [
        "Vendor Advisory"
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      "source": "psirt@us.ibm.com"
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    {
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "IBM API Connect 5.0.0.0 through 5.0.8.10 is vulnerable to HTTP header injection, caused by improper validation of input by the HOST headers. By sending a specially crafted HTTP request, a remote attacker could exploit this vulnerability to inject HTTP HOST header, which will allow the attacker to conduct various attacks against the vulnerable system, including cross-site scripting, cache poisoning or session hijacking. IBM X-Force ID: 187194."
    },
    {
      "lang": "es",
      "value": "IBM API Connect versiones 5.0.0.0 hasta 5.0.8.10, es vulnerable a una inyección de encabezados HTTP, causada por una comprobación inapropiada de la entrada de los encabezados HOST. Mediante el envío de una petición HTTP especialmente diseñada, un atacante remoto podría explotar esta vulnerabilidad para inyectar el encabezado HTTP HOST, que permitiría al atacante llevar a cabo varios ataques contra el sistema vulnerable, incluyendo uno de tipo cross-site scripting, envenenamiento de caché o secuestro de sesión. IBM X-Force ID: 187194."
    }
  ],
  "lastModified": "2026-06-17T03:20:23.467",
  "configurations": [
    {
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          "operator": "OR"
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  "sourceIdentifier": "psirt@us.ibm.com"
}