FKIE_CVE-2026-63421

Vulnerability from fkie_nvd - Published: 2026-08-21 21:17 - Updated: 2026-10-12 16:10
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Keystone is a content management system for Node.js. Prior to 6.5.3, the findMany resolver in packages/core/src/lib/core/queries/resolvers.ts compares the signed take argument directly with graphql.maxTake, allowing a remote unauthenticated GraphQL client to provide a negative take value whose magnitude exceeds the configured bound. The bypass also applies to relationship queries and can return more records than the developer intended, potentially exhausting service resources. This issue is fixed in version 6.5.3.
References
security-advisories@github.comhttps://github.com/keystonejs/keystone/commit/9fb88b246950ce4de754a43fe6416f20403577b1
security-advisories@github.comhttps://github.com/keystonejs/keystone/pull/9859
security-advisories@github.comhttps://github.com/keystonejs/keystone/releases/tag/@keystone-6/core@6.5.3
security-advisories@github.comhttps://github.com/keystonejs/keystone/security/advisories/GHSA-cqmq-8755-7xvh
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "keystone",
          "vendor": "keystonejs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 6.5.3"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Keystone is a content management system for Node.js. Prior to 6.5.3, the findMany resolver in packages/core/src/lib/core/queries/resolvers.ts compares the signed take argument directly with graphql.maxTake, allowing a remote unauthenticated GraphQL client to provide a negative take value whose magnitude exceeds the configured bound. The bypass also applies to relationship queries and can return more records than the developer intended, potentially exhausting service resources. This issue is fixed in version 6.5.3."
    },
    {
      "lang": "es",
      "value": "Keystone es un sistema de gesti\u00f3n de contenidos para Node.js. Antes de la versi\u00f3n 6.5.3, el resolvedor findMany en packages/core/src/lib/core/queries/resolvers.ts compara el argumento \u0027take\u0027 con signo directamente con graphql.maxTake, permitiendo que un cliente GraphQL remoto no autenticado proporcione un valor \u0027take\u0027 negativo cuya magnitud excede el l\u00edmite configurado. La omisi\u00f3n tambi\u00e9n se aplica a las consultas de relaciones y puede devolver m\u00e1s registros de los que el desarrollador pretend\u00eda, agotando potencialmente los recursos del servicio. Este problema se solucion\u00f3 en la versi\u00f3n 6.5.3."
    }
  ],
  "id": "CVE-2026-63421",
  "lastModified": "2026-10-12T16:10:00.220",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-63421",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-26T17:39:02.487794Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-21T21:17:01.643",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/keystonejs/keystone/commit/9fb88b246950ce4de754a43fe6416f20403577b1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/keystonejs/keystone/pull/9859"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/keystonejs/keystone/releases/tag/@keystone-6/core@6.5.3"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/keystonejs/keystone/security/advisories/GHSA-cqmq-8755-7xvh"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        },
        {
          "lang": "en",
          "value": "CWE-480"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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