{"cve":"CVE-2020-28477","nvd":{"published":"2021-01-19T11:15:13.167","modified":"2026-06-17T03:10:30.933","status":"Modified","description":"This affects all versions of package immer.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":[],"references":["https://github.com/immerjs/immer/blob/master/src/plugins/patches.ts%23L213","https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1061986","https://snyk.io/vuln/SNYK-JS-IMMER-1019369","https://github.com/immerjs/immer/blob/master/src/plugins/patches.ts%23L213","https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1061986"],"products":["immer_project:immer"],"source":"nvd","synced_at":"2026-10-19T21:14:10.479542811+00:00"},"epss":{"cve":"CVE-2020-28477","score":0.02341,"percentile":0.83625,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-9qmh-276g-x5pj","url":"https://osv.dev/vulnerability/GHSA-9qmh-276g-x5pj","summary":"Prototype Pollution in immer","modified":"2025-01-14T08:57:00.110130Z","packages":[{"ecosystem":"npm","name":"immer","purl":"pkg:npm/immer","ranges":[">=7.0.0 <8.0.1"],"fixed":["8.0.1"]}]}],"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."]}