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CVE-2021-21267

Estado: ModificadaAlta (7.5)—

Schema-Inspector is an open-source tool to sanitize and validate JS objects (npm package schema-inspector). In before version 2.0.0, email address validation is vulnerable to a denial-of-service attack where some input (for example `a@0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.`) will freeze the program or web browser page executing the code. This affects any current schema-inspector users using any version to validate email addresses. Users who do not do email validation, and instead do other types of validation (like string min or max length, etc), are not affected. Users should upgrade to version 2.0.0, which uses a regex expression that isn't vulnerable to ReDoS.

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 (3)

Netapp — E-series Performance AnalyzerNetapp — Oncommand InsightSchema-inspector Project — Schema-inspector

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-21267",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/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
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/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
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "schema-inspector",
          "product": "schema-inspector",
          "versions": [
            {
              "status": "affected",
              "version": "< 2.0.0"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-03-19T21:15:12.417",
  "references": [
    {
      "url": "https://gist.github.com/mattwelke/b7f42424680a57b8161794ad1737cd8f",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/schema-inspector/schema-inspector/security/advisories/GHSA-f38p-c2gq-4pmr",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://security.netapp.com/advisory/ntap-20210528-0006/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://www.npmjs.com/package/schema-inspector",
      "tags": [
        "Exploit",
        "Third Party Advisory"
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      "source": "security-advisories@github.com"
    },
    {
      "url": "https://gist.github.com/mattwelke/b7f42424680a57b8161794ad1737cd8f",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/schema-inspector/schema-inspector/security/advisories/GHSA-f38p-c2gq-4pmr",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://security.netapp.com/advisory/ntap-20210528-0006/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.npmjs.com/package/schema-inspector",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        },
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Schema-Inspector is an open-source tool to sanitize and validate JS objects (npm package schema-inspector). In before version 2.0.0, email address validation is vulnerable to a denial-of-service attack where some input (for example `a@0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.`) will freeze the program or web browser page executing the code. This affects any current schema-inspector users using any version to validate email addresses. Users who do not do email validation, and instead do other types of validation (like string min or max length, etc), are not affected. Users should upgrade to version 2.0.0, which uses a regex expression that isn't vulnerable to ReDoS."
    },
    {
      "lang": "es",
      "value": "Schema-Inspector es una herramienta de código abierto para sanear y comprobar objetos JS (el inspector de esquema del paquete npm).&#xa0;versiones anteriores a 2.0.0, la comprobación de la dirección de correo electrónico es vulnerable a un ataque de denegación de servicio donde alguna entrada (por ejemplo, \"a@0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0 .0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0 \") congelará el programa o la página del navegador web que ejecuta el código.&#xa0;Esto afecta a cualquier usuario actual del inspector de esquemas que usan cualquier versión para comprobar direcciones de correo electrónico.&#xa0;Los usuarios que no realizan la comprobación por correo electrónico y, en su lugar, realizan otros tipos de comprobación (como la longitud mínima o máxima de la cadena, etc.), no están afectados.&#xa0;Los usuarios deben actualizar a la versión 2.0.0, que usa una expresión regular que no es vulnerable a ReDoS"
    }
  ],
  "lastModified": "2026-06-17T03:35:09.537",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:schema-inspector_project:schema-inspector:*:*:*:*:*:node.js:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D161AA96-06D3-4764-9274-A3BD6FC67DEC",
              "versionEndExcluding": "2.0.0"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "vulnerable": true,
              "matchCriteriaId": "24B8DB06-590A-4008-B0AB-FCD1401C77C6"
            },
            {
              "criteria": "cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F1BE6C1F-2565-4E97-92AA-16563E5660A5"
            }
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          "operator": "OR"
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  ],
  "sourceIdentifier": "security-advisories@github.com"
}