{"id":"CVE-2021-20087","details":"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.","aliases":["GHSA-xg68-chx2-253g"],"modified":"2026-03-14T10:37:51.910238Z","published":"2021-04-23T18:15:08.067Z","references":[{"type":"WEB","url":"https://github.com/RetireJS/retire.js/blob/6da45fcb6a3425e55ee8181b2ac35168879bf086/repository/jsrepository-master.json#L824-L842"},{"type":"EVIDENCE","url":"https://github.com/BlackFan/client-side-prototype-pollution/blob/master/pp/jquery-deparam.md"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/acemetrix/jquery-deparam","events":[{"introduced":"0"},{"last_affected":"f4be87dfe0e6da13455e9bbbcd4f6a3fa358d71e"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"0.5.1"}]}}],"versions":["0.1.0","0.2.0","0.3.0","0.4.0","0.4.2","0.5.0","0.5.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-20087.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}