CVE-2021-20085

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{"affected": [{"affectedData": [{"product": "backbone-query-parameters", "vendor": "n/a", "versions": [{"status": "affected", "version": "0.4.0"}]}], "source": "vulnreport@tenable.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:backbone-query-parameters_project:backbone-query-parameters:0.4.0:*:*:*:*:*:*:*", "matchCriteriaId": "54C94CC9-D33F-443A-B618-85B140CD291D", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in backbone-query-parameters 0.4.0 allows a malicious user to inject properties into Object.prototype."}, {"lang": "es", "value": "Una Modificaci\u00f3n Controlada Inapropiadamente de Object Prototype Attributes (\"Prototype Pollution\") en backbone-query-parameters versi\u00f3n 0.4.0, permite a un usuario malicioso inyectar propiedades en Object.prototype"}], "id": "CVE-2021-20085", "lastModified": "2026-06-17T03:33:15.000", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 6.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-04-23T19:15:10.647", "references": [{"source": "vulnreport@tenable.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/BlackFan/client-side-prototype-pollution/blob/master/pp/backbone-qp.md"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/BlackFan/client-side-prototype-pollution/blob/master/pp/backbone-qp.md"}], "sourceIdentifier": "vulnreport@tenable.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1321"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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