{"id":"CVE-2021-3766","aliases":["EUVD-2021-2106","GHSA-r659-8xfp-j327"],"status":"published","title":"Prototype Pollution in vincit/objection.js","description":"objection.js is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.0147,"percentile":0.74131,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1321","CWE-915"],"published":"2021-09-06T11:17:16Z","modified":"2026-10-20T10:54:50Z","fixes":[{"ecosystem":"npm","package":"objection","fixed_in":["2.2.16"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"objection","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.16"}]}]},{"source":"osv","ecosystem":"npm","package":"objection","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.2.16"}]}]}],"products":[{"vendor":"objection_project","product":"objection"},{"vendor":"vincit","product":"vincit/objection.js"}],"references":[{"url":"https://huntr.dev/bounties/c98e0f0e-ebf2-4072-be73-a1848ea031cc","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Issue Tracking","Patch","Third Party Advisory","fix","web"]},{"url":"https://github.com/Vincit/objection.js/commit/46b842a6bc897198b83f41ac85c92864b991d7e9","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3766","tags":["advisory"]},{"url":"https://github.com/vincit/objection.js/commit/b41aab8dcd78f426f7468dcda541a7aca18a66a6","tags":["web"]},{"url":"https://github.com/advisories/GHSA-r659-8xfp-j327"},{"url":"https://github.com/vincit/objection.js","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-3766","title":"Prototype Pollution in vincit/objection.js","description":"objection.js is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","status":"published","published":"2021-09-06T11:17:16Z","modified":"2024-08-03T17:09:08.632Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:33:04.020035Z"}],"euvd":[{"id":"EUVD-2021-2106","description":"objection.js is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","status":"published","published":"2021-09-06T11:17:16Z","modified":"2024-08-03T17:09:08Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T03:25:11.953192Z"}],"ghsa":[{"id":"GHSA-r659-8xfp-j327","title":"objection.js Prototype Pollution vulnerability","description":"objection.js prior to version 2.2.16 is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution'). This issue is patched in version 2.2.16.","status":"published","published":"2021-09-07T23:09:43Z","modified":"2023-09-07T18:40:01Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-915","CWE-1321"],"updated_at":"2026-11-02T14:37:02.632342Z"}],"nvd":[{"id":"CVE-2021-3766","description":"objection.js is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","status":"published","published":"2021-09-06T12:15:08.177Z","modified":"2026-06-17T04:05:43.447Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:06:58.05696Z"}],"osv":[{"id":"CVE-2021-3766","description":"objection.js is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","status":"published","published":"2021-09-06T12:15:08.177Z","modified":"2026-10-20T10:54:50.53136535Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:20.434873Z"},{"id":"GHSA-r659-8xfp-j327","title":"objection.js Prototype Pollution vulnerability","description":"objection.js prior to version 2.2.16 is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution'). 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