What is CVE-2020-28471?

CVE-2020-28471 is a high-severity vulnerability in Properties-Reader Project, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 7.3/10. Published 2022-07-25.

How severe is CVE-2020-28471?

High severity. CVSS v3 base score is 7.3 out of 10.

Prototype Pollution in Properties-Reader Project

CVE-2020-28471

This affects the package properties-reader before 2.2.0.

Vulnerability class: Prototype Pollution

Published 2022-07-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.014 (71.0th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 71.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.014 · change: +0.000

Affected products

Properties-Reader Project
Properties-Reader — versions unspecified

Weakness classification (CWE)

CWE-1321 — Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution)

References

security.snyk.io/vuln/SNYK-JS-PROPERTIESREADER-1048968 (Exploit, Third Party Advisory)
github.com/steveukx/properties/commit/0877cc871db9865f58dd9389ce99e61be05380a5 (Patch, Third Party Advisory)
github.com/steveukx/properties/issues/40 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2020-28471?: CVE-2020-28471 is a high-severity vulnerability in Properties-Reader Project, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 7.3/10. Published 2022-07-25.
How severe is CVE-2020-28471?: High severity. CVSS v3 base score is 7.3 out of 10.