CVE-2021-23574

Name: CVE-2021-23574
Creator: NVD / NIST
Published: 2021-12-24T20:15:08.077+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.10%

Last modified Jun 17, 2026

CVE-2021-23574 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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).. EPSS estimates a 2.10% chance of exploitation in the next 30 days.

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).

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.10%

79.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1321

Affected Software

Vendor	Product	Versions
Js-Data	Js-Data	< 3.0.11

References

https://github.com/js-data/js-data/blob/master/dist/js-data.js%23L472Broken Link, Third Party Advisory
https://github.com/js-data/js-data/issues/576Issue Tracking, Patch, Third Party Advisory
https://github.com/js-data/js-data/issues/577Issue Tracking, Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-2320790Exploit, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-2320791Exploit, Third Party Advisory
https://snyk.io/vuln/SNYK-JS-JSDATA-1584361Exploit, Third Party Advisory
https://github.com/js-data/js-data/blob/master/dist/js-data.js%23L472Broken Link, Third Party Advisory
https://github.com/js-data/js-data/issues/576Issue Tracking, Patch, Third Party Advisory
https://github.com/js-data/js-data/issues/577Issue Tracking, Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-2320790Exploit, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-2320791Exploit, Third Party Advisory
https://snyk.io/vuln/SNYK-JS-JSDATA-1584361Exploit, Third Party Advisory

Timeline

Published: Dec 24, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-23574?

How severe is CVE-2021-23574?

CVE-2021-23574 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.10% probability of exploitation in the next 30 days.

How do I fix CVE-2021-23574?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-23574?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST