CVE-2021-4264

Name: CVE-2021-4264
Creator: NVD / NIST
Published: 2022-12-21T19:15:12.52+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.07%

Last modified Jun 17, 2026

CVE-2021-4264 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A vulnerability was found in LinkedIn dustjs up to 2.x and classified as problematic. Affected by this issue is some unknown functionality. EPSS estimates a 1.07% chance of exploitation in the next 30 days.

Description

A vulnerability was found in LinkedIn dustjs up to 2.x and classified as problematic. Affected by this issue is some unknown functionality. The manipulation leads to improperly controlled modification of object prototype attributes ('prototype pollution'). The attack may be launched remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 3.0.0 is able to address this issue. The name of the patch is ddb6523832465d38c9d80189e9de60519ac307c3. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-216464.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.07%

60.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1321

Affected Software

Vendor	Product	Versions
Linkedin	Dustjs	< 3.0.0

References

https://github.com/linkedin/dustjs/commit/ddb6523832465d38c9d80189e9de60519ac307c3Patch, Third Party Advisory
https://github.com/linkedin/dustjs/issues/804Exploit, Issue Tracking, Third Party Advisory
https://github.com/linkedin/dustjs/pull/805Exploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/linkedin/dustjs/releases/tag/v3.0.0Release Notes, Third Party Advisory
https://vuldb.com/?ctiid.216464VDB Entry
https://vuldb.com/?id.216464Third Party Advisory, VDB Entry
https://github.com/linkedin/dustjs/commit/ddb6523832465d38c9d80189e9de60519ac307c3Patch, Third Party Advisory
https://github.com/linkedin/dustjs/issues/804Exploit, Issue Tracking, Third Party Advisory
https://github.com/linkedin/dustjs/pull/805Exploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/linkedin/dustjs/releases/tag/v3.0.0Release Notes, Third Party Advisory
https://vuldb.com/?ctiid.216464VDB Entry
https://vuldb.com/?id.216464Third Party Advisory, VDB Entry

Timeline

Published: Dec 21, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-4264?

How severe is CVE-2021-4264?

CVE-2021-4264 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.07% probability of exploitation in the next 30 days.

How do I fix CVE-2021-4264?

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-2021-4264?

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

Scan your code now

Source: NVD / NIST