{"id":"CVE-2021-20085","details":"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.","aliases":["GHSA-8qpm-5c82-rf96"],"modified":"2026-07-08T12:05:44.583742Z","published":"2021-04-23T19:15:10.647Z","references":[{"type":"EVIDENCE","url":"https://github.com/BlackFan/client-side-prototype-pollution/blob/master/pp/backbone-qp.md"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/jhudson8/backbone-query-parameters","events":[{"introduced":"dbab3a45f4699a8ac99a1e99eccf9f302d838f4e"},{"last_affected":"dbab3a45f4699a8ac99a1e99eccf9f302d838f4e"}],"database_specific":{"cpe":"cpe:2.3:a:backbone-query-parameters_project:backbone-query-parameters:0.4.0:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0.4.0"},{"last_affected":"0.4.0"}],"source":"CPE_STRING"}}],"versions":["0.4.0","v0.4.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-20085.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"}]}