CVE-2020-28270

Name: CVE-2020-28270
Creator: NVD / NIST
Published: 2020-11-12T18:15:15.877+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 3.69%

Last modified Jun 17, 2026

CVE-2020-28270 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Prototype pollution vulnerability in 'object-hierarchy-access' versions 0.2.0 through 0.32.0 allows attacker to cause a denial of service and may lead to remote code execution.. EPSS estimates a 3.69% chance of exploitation in the next 30 days.

Description

Prototype pollution vulnerability in 'object-hierarchy-access' versions 0.2.0 through 0.32.0 allows attacker to cause a denial of service and may lead to remote code execution.

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

3.69%

88.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1321

Affected Software

Vendor	Product	Versions
Mjpclab	Object-Hierarchy-Access	>= 0.2.0, <= 0.32.0

References

https://github.com/mjpclab/object-hierarchy-access/commit/7b1aa134a8bc4a376296bcfac5c3463aef2b7572Patch, Third Party Advisory
https://www.whitesourcesoftware.com/vulnerability-database/CVE-2020-28270Exploit, Third Party Advisory
https://github.com/mjpclab/object-hierarchy-access/commit/7b1aa134a8bc4a376296bcfac5c3463aef2b7572Patch, Third Party Advisory
https://www.whitesourcesoftware.com/vulnerability-database/CVE-2020-28270Exploit, Third Party Advisory

Timeline

Published: Nov 12, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-28270?

Prototype pollution vulnerability in 'object-hierarchy-access' versions 0.2.0 through 0.32.0 allows attacker to cause a denial of service and may lead to remote code execution.

How severe is CVE-2020-28270?

CVE-2020-28270 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 3.69% probability of exploitation in the next 30 days.

How do I fix CVE-2020-28270?

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-2020-28270?

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

Scan your code now

Source: NVD / NIST