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CVE-2021-21339

Estado: ModificadaAlta (7.5)—

TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 6.2.57, 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1 user session identifiers were stored in cleartext - without processing of additional cryptographic hashing algorithms. This vulnerability cannot be exploited directly and occurs in combination with a chained attack - like for instance SQL injection in any other component of the system. This is fixed in versions 6.2.57, 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1.

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)

Typo3 — Typo3

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-21339",
  "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:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "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": 5.9,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.2
      },
      {
        "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:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "TYPO3",
          "product": "TYPO3.CMS",
          "versions": [
            {
              "status": "affected",
              "version": ">= 6.2.0, <= 6.2.56"
            },
            {
              "status": "affected",
              "version": ">= 7.0.0, <= 7.6.50"
            },
            {
              "status": "affected",
              "version": ">= 8.0.0, <= 8.7.39"
            },
            {
              "status": "affected",
              "version": ">= 9.0.0, <= 9.5.24"
            },
            {
              "status": "affected",
              "version": ">= 10.0.0, <= 10.4.13"
            },
            {
              "status": "affected",
              "version": ">= 11.0.0, <= 11.1.0"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-03-23T02:15:12.453",
  "references": [
    {
      "url": "https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-qx3w-4864-94ch",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://packagist.org/packages/typo3/cms-core",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://typo3.org/security/advisory/typo3-core-sa-2021-006",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-qx3w-4864-94ch",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://packagist.org/packages/typo3/cms-core",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
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      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-312"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 6.2.57, 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1 user session identifiers were stored in cleartext - without processing of additional cryptographic hashing algorithms. This vulnerability cannot be exploited directly and occurs in combination with a chained attack - like for instance SQL injection in any other component of the system. This is fixed in versions 6.2.57, 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1."
    },
    {
      "lang": "es",
      "value": "TYPO3 es un sistema de gestión de contenidos web de código abierto basado en PHP. En TYPO3 versiones anteriores 6.2.57, 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1 los identificadores de sesión de usuario se almacenaban en texto claro - sin procesar algoritmos de hash criptográficos adicionales. Esta vulnerabilidad no puede ser explotada directamente y ocurre en combinación con un ataque encadenado - como por ejemplo la inyección SQL en cualquier otro componente del sistema. Esto se ha corregido en las versiones 6.2.57, 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1"
    }
  ],
  "lastModified": "2026-06-17T03:35:19.860",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*",
              "vulnerable": true,
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              "versionEndExcluding": "6.2.57",
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            },
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}