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CVE-2021-3757

Estado: ModificadaCrítica (9.8)—

immer is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

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)

Immer Project — Immer

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-3757",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Secondary",
        "source": "security@huntr.dev",
        "cvssData": {
          "scope": "UNCHANGED",
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          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
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          "baseSeverity": "CRITICAL",
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          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
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          "confidentialityImpact": "HIGH"
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  "affected": [
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      "affectedData": [
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          "vendor": "immerjs",
          "product": "immerjs/immer",
          "versions": [
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              "version": "unspecified",
              "versionType": "custom",
              "lessThanOrEqual": "9.0.5"
            }
          ]
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      ]
    }
  ],
  "published": "2021-09-02T12:15:07.617",
  "references": [
    {
      "url": "https://github.com/immerjs/immer/commit/fa671e55ee9bd42ae08cc239102b665a23958237",
      "tags": [
        "Patch",
        "Third Party Advisory"
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      "source": "security@huntr.dev"
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    {
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      "tags": [
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        "Issue Tracking",
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        "Third Party Advisory"
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      "source": "security@huntr.dev"
    },
    {
      "url": "https://github.com/immerjs/immer/commit/fa671e55ee9bd42ae08cc239102b665a23958237",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://huntr.dev/bounties/23d38099-71cd-42ed-a77a-71e68094adfa",
      "tags": [
        "Exploit",
        "Issue Tracking",
        "Patch",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@huntr.dev",
      "description": [
        {
          "lang": "en",
          "value": "CWE-1321"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-1321"
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      ]
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "immer is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')"
    },
    {
      "lang": "es",
      "value": "immer es vulnerable a una Modificación Controlada Inapropiada de Atributos de Prototipos de Objetos (\"Contaminación de Prototipos\")"
    }
  ],
  "lastModified": "2026-06-17T04:05:42.463",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:immer_project:immer:*:*:*:*:*:node.js:*:*",
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              "versionEndIncluding": "9.0.5"
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          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@huntr.dev"
}