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CVE-2020-28270

Status: ModifiedCritical (9.8)—

Prototype pollution vulnerability in 'object-hierarchy-access' versions 0.2.0 through 0.32.0 allows attacker to cause a denial of service and may lead to remote code execution.

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)

Mjpclab — Object-hierarchy-access

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2020-28270",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "vulnerabilitylab@mend.io",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "object-hierarchy-access",
          "versions": [
            {
              "status": "affected",
              "version": "0.32.0, 0.31.0, 0.30.0, 0.29.1, 0.29.0, 0.28.0, 0.27.1, 0.27.0, 0.26.0, 0.25.2, 0.25.1, 0.25.0, 0.24.0, 0.23.0, 0.22.0, 0.21.0, 0.20.2, 0.20.1, 0.20.0, 0.19.0, 0.18.0, 0.17.0, 0.16.0, 0.15.0, 0.14.1, 0.13.1, 0.12.0, 0.11.0, 0.10.0, 0.9.0, 0.8.0, 0.7.3, 0.7.2, 0.6.0, 0.5.2, 0.5.1, 0.4.3, 0.4.2, 0.4.1, 0.4.0, 0.2.0"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-11-12T18:15:15.877",
  "references": [
    {
      "url": "https://github.com/mjpclab/object-hierarchy-access/commit/7b1aa134a8bc4a376296bcfac5c3463aef2b7572",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "vulnerabilitylab@mend.io"
    },
    {
      "url": "https://www.whitesourcesoftware.com/vulnerability-database/CVE-2020-28270",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "vulnerabilitylab@mend.io"
    },
    {
      "url": "https://github.com/mjpclab/object-hierarchy-access/commit/7b1aa134a8bc4a376296bcfac5c3463aef2b7572",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.whitesourcesoftware.com/vulnerability-database/CVE-2020-28270",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-1321"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Prototype pollution vulnerability in 'object-hierarchy-access' versions 0.2.0 through 0.32.0 allows attacker to cause a denial of service and may lead to remote code execution."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de contaminación de prototipo en \"object-hierarchy-access\" versiones 0.2.0 hasta la versión 0.32.0, permite a un atacante causar una denegación de servicio y puede conllevar a una ejecución de código remota"
    }
  ],
  "lastModified": "2026-06-17T03:10:15.280",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:mjpclab:object-hierarchy-access:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "AE11BCCB-CE10-4863-9A0C-233FFCD1A395",
              "versionEndIncluding": "0.32.0",
              "versionStartIncluding": "0.2.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "vulnerabilitylab@mend.io"
}