{"id":"CVE-2021-20087","state":"PUBLISHED","title":"Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in jquery-deparam 0.5.1 allows a malicious user to inject properties into Object.prototype","description":"Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in jquery-deparam 0.5.1 allows a malicious user to inject properties into Object.prototype.","publishedAt":"2021-04-23T17:58:23.000Z","updatedAt":"2025-08-14T20:55:35.525Z","severity":null,"assigner":"tenable","products":["n/a jquery-deparam"],"affected":[{"vendor":"n/a","product":"jquery-deparam","versions":[{"version":"0.5.1","status":"affected"}]}],"references":["https://github.com/BlackFan/client-side-prototype-pollution/blob/master/pp/jquery-deparam.md","https://github.com/RetireJS/retire.js/blob/6da45fcb6a3425e55ee8181b2ac35168879bf086/repository/jsrepository-master.json#L824-L842"],"weaknesses":[],"ingestedAt":"2026-10-29T19:47:55.610Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/20xxx/CVE-2021-20087.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-20087","state":"PUBLISHED","datePublished":"2021-04-23T17:58:23.000Z","dateUpdated":"2025-08-14T20:55:35.525Z","assignerShortName":"tenable","assignerOrgId":"5ac1ecc2-367a-4d16-a0b2-35d495ddd0be","dateReserved":"2020-12-17T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in jquery-deparam 0.5.1 allows a malicious user to inject properties into Object.prototype."}],"affected":[{"vendor":"n/a","product":"jquery-deparam","versions":[{"version":"0.5.1","status":"affected"}]}],"references":[{"url":"https://github.com/BlackFan/client-side-prototype-pollution/blob/master/pp/jquery-deparam.md","tags":["x_refsource_MISC"]}],"problemTypes":[{"descriptions":[{"description":"Prototype Pollution","lang":"en","type":"text"}]}],"providerMetadata":{"shortName":"tenable","dateUpdated":"2021-04-23T17:58:23.000Z","orgId":"5ac1ecc2-367a-4d16-a0b2-35d495ddd0be"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"vulnreport@tenable.com","ID":"CVE-2021-20087","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"jquery-deparam","version":{"version_data":[{"version_value":"0.5.1"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in jquery-deparam 0.5.1 allows a malicious user to inject properties into Object.prototype."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Prototype Pollution"}]}]},"references":{"reference_data":[{"name":"https://github.com/BlackFan/client-side-prototype-pollution/blob/master/pp/jquery-deparam.md","refsource":"MISC","url":"https://github.com/BlackFan/client-side-prototype-pollution/blob/master/pp/jquery-deparam.md"}]}}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://github.com/RetireJS/retire.js/blob/6da45fcb6a3425e55ee8181b2ac35168879bf086/repository/jsrepository-master.json#L824-L842"},{"url":"https://github.com/BlackFan/client-side-prototype-pollution/blob/master/pp/jquery-deparam.md","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2025-08-14T20:55:35.525Z"},"x_generator":{"engine":"ADPogram 0.0.1"}}]}}}