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CVE-2021-37939

Estado: ModificadaBaja (2.7)—

It was discovered that Kibana’s JIRA connector & IBM Resilient connector could be used to return HTTP response data on internal hosts, which may be intentionally hidden from public view. Using this vulnerability, a malicious user with the ability to create connectors, could utilize these connectors to view limited HTTP response data on hosts accessible to the cluster.

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)

Elastic — Kibana

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-37939",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
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          "privilegesRequired": "HIGH",
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  "affected": [
    {
      "source": "security@elastic.co",
      "affectedData": [
        {
          "vendor": "Elastic",
          "product": "Kibana",
          "versions": [
            {
              "status": "affected",
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  "published": "2021-11-18T16:15:08.963",
  "references": [
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      "tags": [
        "Vendor Advisory"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "security@elastic.co",
      "description": [
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    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "CWE-319"
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  "descriptions": [
    {
      "lang": "en",
      "value": "It was discovered that Kibana’s JIRA connector & IBM Resilient connector could be used to return HTTP response data on internal hosts, which may be intentionally hidden from public view. Using this vulnerability, a malicious user with the ability to create connectors, could utilize these connectors to view limited HTTP response data on hosts accessible to the cluster."
    },
    {
      "lang": "es",
      "value": "Se ha detectado que el conector JIRA de Kibana y el conector Resilient de IBM pueden ser usados para devolver datos de respuesta HTTP en hosts internos, que pueden estar intencionadamente ocultos a la vista del público. Usando esta vulnerabilidad, un usuario malicioso con la capacidad de crear conectores, podría usar estos conectores para ver datos de respuesta HTTP limitados en hosts accesibles al cluster."
    }
  ],
  "lastModified": "2026-06-17T04:01:17.393",
  "configurations": [
    {
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          "cpeMatch": [
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