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).
https://github.com/js-data/js-data/issues/577
https://github.com/js-data/js-data/issues/576
https://snyk.io/vuln/SNYK-JS-JSDATA-1584361
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-2320791
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-2320790
https://github.com/js-data/js-data/blob/master/dist/js-data.js%23L472
Source: Mitre, NVD
Published: 2021-12-24
Updated: 2026-06-17
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Base Score: 9.8
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: Critical
EPSS: 0.01036