CVE-2021-23396

Name: CVE-2021-23396
Creator: NVD / NIST
Published: 2021-06-17T17:15:07.427+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.00%

Last modified Jun 17, 2026

CVE-2021-23396 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. All versions of package lutils are vulnerable to Prototype Pollution via the main (merge) function.. EPSS estimates a 1.00% chance of exploitation in the next 30 days.

Description

All versions of package lutils are vulnerable to Prototype Pollution via the main (merge) function.

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

1.00%

58.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1321

Affected Software

Vendor	Product	Versions
Lutils Project	Lutils	All versions

References

https://snyk.io/vuln/SNYK-JS-LUTILS-1311023Exploit, Third Party Advisory
https://snyk.io/vuln/SNYK-JS-LUTILS-1311023Exploit, Third Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2021-23396?

All versions of package lutils are vulnerable to Prototype Pollution via the main (merge) function.

How severe is CVE-2021-23396?

CVE-2021-23396 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.00% probability of exploitation in the next 30 days.

How do I fix CVE-2021-23396?

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-2021-23396?

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

Scan your code now

Source: NVD / NIST