FKIE_CVE-2021-22540

Vulnerability from fkie_nvd - Published: 2021-04-22 15:15 - Updated: 2026-06-17 03:37
Severity
6.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Summary
Bad validation logic in the Dart SDK versions prior to 2.12.3 allow an attacker to use an XSS attack via DOM clobbering. The validation logic in dart:html for creating DOM nodes from text did not sanitize properly when it came across template tags.
References
cve-coordination@google.comhttps://github.com/dart-lang/sdk/commit/ce5a1c2392debce967415d4c09359ff2555e3588Patch, Third Party Advisory
cve-coordination@google.comhttps://github.com/dart-lang/sdk/security/advisories/GHSA-3rfv-4jvg-9522Broken Link
af854a3a-2127-422b-91ae-364da2661108https://github.com/dart-lang/sdk/commit/ce5a1c2392debce967415d4c09359ff2555e3588Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/dart-lang/sdk/security/advisories/GHSA-3rfv-4jvg-9522Broken Link
Impacted products
Vendor Product Version
dart dart_software_development_kit *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Dart SDK",
          "vendor": "Google LLC",
          "versions": [
            {
              "lessThan": "2.12.3",
              "status": "affected",
              "version": "stable",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "cve-coordination@google.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:dart:dart_software_development_kit:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E9ECB219-E894-4499-9918-2199CA9532EA",
              "versionEndExcluding": "2.12.3",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Bad validation logic in the Dart SDK versions prior to 2.12.3 allow an attacker to use an XSS attack via DOM clobbering. The validation logic in dart:html for creating DOM nodes from text did not sanitize properly when it came across template tags."
    },
    {
      "lang": "es",
      "value": "Una mala l\u00f3gica de comprobaci\u00f3n en el Dart SDK versiones anteriores a 2.12.3 permite a un atacante usar un ataque de tipo XSS por medio de DOM clobbering.\u0026#xa0;La l\u00f3gica de comprobaci\u00f3n en dart: html para crear nodos DOM a partir de texto no se saneaban apropiadamente cuando se encontraba con etiquetas de plantilla"
    }
  ],
  "id": "CVE-2021-22540",
  "lastModified": "2026-06-17T03:37:24.327",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.7,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-04-22T15:15:07.930",
  "references": [
    {
      "source": "cve-coordination@google.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/dart-lang/sdk/commit/ce5a1c2392debce967415d4c09359ff2555e3588"
    },
    {
      "source": "cve-coordination@google.com",
      "tags": [
        "Broken Link"
      ],
      "url": "https://github.com/dart-lang/sdk/security/advisories/GHSA-3rfv-4jvg-9522"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/dart-lang/sdk/commit/ce5a1c2392debce967415d4c09359ff2555e3588"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Broken Link"
      ],
      "url": "https://github.com/dart-lang/sdk/security/advisories/GHSA-3rfv-4jvg-9522"
    }
  ],
  "sourceIdentifier": "cve-coordination@google.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "cve-coordination@google.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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