{"cve":"CVE-2021-23574","nvd":{"published":"2021-12-24T20:15:08.077","modified":"2026-06-17T03:38:50.180","status":"Modified","description":"All versions of package js-data are vulnerable to Prototype Pollution via the deepFillIn and the set functions. This is an incomplete fix of [CVE-2020-28442](https://snyk.io/vuln/SNYK-JS-JSDATA-1023655).","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/js-data/js-data/blob/master/dist/js-data.js%23L472","https://github.com/js-data/js-data/issues/576","https://github.com/js-data/js-data/issues/577","https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-2320790","https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-2320791"],"products":["js-data:js-data"],"source":"nvd","synced_at":"2026-10-19T21:26:33.761856376+00:00"},"epss":{"cve":"CVE-2021-23574","score":0.02168,"percentile":0.82263,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-c6h4-gc3f-hgjq","url":"https://osv.dev/vulnerability/GHSA-c6h4-gc3f-hgjq","summary":"Prototype Pollution in js-data","modified":"2023-11-08T04:05:11.819771Z","packages":[{"ecosystem":"npm","name":"js-data","purl":"pkg:npm/js-data","ranges":["<=3.0.10"],"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."]}