{"cve":"CVE-2021-23442","nvd":{"published":"2021-09-17T10:15:07.437","modified":"2026-06-17T03:38:46.197","status":"Modified","description":"This affects all versions of package @cookiex/deep. The global proto object can be polluted using the __proto__ object.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-1321"],"references":["https://github.com/tony-tsx/cookiex-deep/commit/b5bea2b7f34a5fa9abb4446cbd038ecdbcd09c88","https://github.com/tony-tsx/cookiex-deep/issues/1","https://snyk.io/vuln/SNYK-JS-COOKIEXDEEP-1582793","https://github.com/tony-tsx/cookiex-deep/commit/b5bea2b7f34a5fa9abb4446cbd038ecdbcd09c88","https://github.com/tony-tsx/cookiex-deep/issues/1"],"products":["cookiex-deep_project:cookiex-deep"],"source":"nvd","synced_at":"2026-10-19T21:23:41.316049955+00:00"},"epss":{"cve":"CVE-2021-23442","score":0.0159,"percentile":0.75659,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-92v9-xh2q-fq9f","url":"https://osv.dev/vulnerability/GHSA-92v9-xh2q-fq9f","summary":"Prototype Pollution in cookiex/deep","modified":"2026-09-10T03:49:08.611119532Z","packages":[{"ecosystem":"npm","name":"@cookiex/deep","purl":"pkg:npm/%40cookiex/deep","ranges":["<0.0.7"],"fixed":["0.0.7"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}