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CVE-2021-46249

Status: ModifiedMedium (6.5)—

An authorization bypass exploited by a user-controlled key in SpecificApps REST API in ScratchOAuth2 before commit d856dc704b2504cd3b92cf089fdd366dd40775d6 allows app owners to set flags that indicate whether an app is verified on their own apps.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Scratchoauth2 Project — Scratchoauth2

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2021-46249",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cve@mitre.org",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2022-02-15T23:15:07.917",
  "references": [
    {
      "url": "https://github.com/ScratchVerifier/ScratchOAuth2/commit/d856dc704b2504cd3b92cf089fdd366dd40775d6",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/ScratchVerifier/ScratchOAuth2/commit/d856dc704b2504cd3b92cf089fdd366dd40775d6",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-639"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An authorization bypass exploited by a user-controlled key in SpecificApps REST API in ScratchOAuth2 before commit d856dc704b2504cd3b92cf089fdd366dd40775d6 allows app owners to set flags that indicate whether an app is verified on their own apps."
    },
    {
      "lang": "es",
      "value": "Una omisión de autorización explotado por una clave controlada por el usuario en la API REST de SpecificApps en ScratchOAuth2 versiones anteriores al commit d856dc704b2504cd3b92cf089fdd366dd40775d6, permite a propietarios de aplicaciones establecer flags que indican si una aplicación está verificada en sus propias aplicaciones"
    }
  ],
  "lastModified": "2026-06-17T04:14:41.103",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:scratchoauth2_project:scratchoauth2:*:*:*:*:*:scratch:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E55D1FD3-4081-440A-B720-CF5AC45039D5",
              "versionEndExcluding": "2021-04-12"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}