CVE-2021-4278

Name: CVE-2021-4278
Creator: NVD / NIST
Published: 2022-12-25T16:15:10.4+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.43%

Last modified Jun 17, 2026

CVE-2021-4278 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A vulnerability classified as problematic has been found in cronvel tree-kit up to 0.6.x. This affects an unknown part. EPSS estimates a 0.43% chance of exploitation in the next 30 days.

Description

A vulnerability classified as problematic has been found in cronvel tree-kit up to 0.6.x. This affects an unknown part. The manipulation leads to improperly controlled modification of object prototype attributes ('prototype pollution'). Upgrading to version 0.7.0 is able to address this issue. The name of the patch is a63f559c50d70e8cb2eaae670dec25d1dbc4afcd. It is recommended to upgrade the affected component. The identifier VDB-216765 was assigned to this vulnerability.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.43%

34.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1321

Affected Software

Vendor	Product	Versions
Tree Kit Project	Tree Kit	< 0.7.0

References

https://github.com/cronvel/tree-kit/commit/a63f559c50d70e8cb2eaae670dec25d1dbc4afcdPatch, Third Party Advisory
https://github.com/cronvel/tree-kit/releases/tag/v0.7.0Release Notes, Third Party Advisory
https://vuldb.com/?ctiid.216765Third Party Advisory
https://vuldb.com/?id.216765Third Party Advisory
https://github.com/cronvel/tree-kit/commit/a63f559c50d70e8cb2eaae670dec25d1dbc4afcdPatch, Third Party Advisory
https://github.com/cronvel/tree-kit/releases/tag/v0.7.0Release Notes, Third Party Advisory
https://vuldb.com/?ctiid.216765Third Party Advisory
https://vuldb.com/?id.216765Third Party Advisory

Timeline

Published: Dec 25, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-4278?

How severe is CVE-2021-4278?

CVE-2021-4278 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.

How do I fix CVE-2021-4278?

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-2021-4278?

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

Scan your code now

Source: NVD / NIST