{"cve":"CVE-2021-23417","nvd":{"published":"2021-07-28T16:15:08.100","modified":"2026-06-17T03:38:43.513","status":"Modified","description":"All versions of package deepmergefn are vulnerable to Prototype Pollution via deepMerge function.","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/jesusgm/deepmergefn/blob/master/index.js%23L6","https://snyk.io/vuln/SNYK-JS-DEEPMERGEFN-1310984","https://github.com/jesusgm/deepmergefn/blob/master/index.js%23L6","https://snyk.io/vuln/SNYK-JS-DEEPMERGEFN-1310984"],"products":["deepmergefn_project:deepmergefn"],"source":"nvd","synced_at":"2026-10-19T21:21:13.713336758+00:00"},"epss":{"cve":"CVE-2021-23417","score":0.01083,"percentile":0.65197,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-vj72-mwrj-m2xq","url":"https://osv.dev/vulnerability/GHSA-vj72-mwrj-m2xq","summary":"Prototype Pollution in deepmergefn","modified":"2023-11-08T04:05:08.435536Z","packages":[{"ecosystem":"npm","name":"deepmergefn","purl":"pkg:npm/deepmergefn","ranges":["<=1.1.0"],"fixed":[]}]}],"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."]}