What is CVE-2020-28503?

CVE-2020-28503 is a high-severity vulnerability in Gulpjs Copy-Props. CVSS score: 7.3/10. Published 2021-03-23.

How severe is CVE-2020-28503?

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

Vulnerability in Gulpjs Copy-Props

CVE-2020-28503

The package copy-props before 2.0.5 are vulnerable to Prototype Pollution via the main functionality.

Published 2021-03-23 · 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: 0.017 (76.3th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 76.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

Gulpjs Copy-Props
Copy-Props — versions unspecified

References

snyk.io/vuln/SNYK-JS-COPYPROPS-1082870 (Exploit, Third Party Advisory)
snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1088047 (Exploit, Third Party Advisory)
github.com/gulpjs/copy-props/pull/7 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2020-28503?: CVE-2020-28503 is a high-severity vulnerability in Gulpjs Copy-Props. CVSS score: 7.3/10. Published 2021-03-23.
How severe is CVE-2020-28503?: High severity. CVSS v3 base score is 7.3 out of 10.