CVE-2020-28503

HIGHNVD 7.37.3—

7.3

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

CVSS v3: 7.3
EG Score: 7.3(medium)
EPSS: 69.1%
KEV: Not listed

Published

March 23, 2021

Last Modified

November 21, 2024

References (6)

report@snykhttps://github.com/gulpjs/copy-props/pull/7
report@snykhttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1088047
report@snykhttps://snyk.io/vuln/SNYK-JS-COPYPROPS-1082870
af854a3a-2127-422b-91ae-364da2661108https://github.com/gulpjs/copy-props/pull/7
af854a3a-2127-422b-91ae-364da2661108https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1088047
af854a3a-2127-422b-91ae-364da2661108https://snyk.io/vuln/SNYK-JS-COPYPROPS-1082870

Affected Packages

(1 across 1 ecosystem)

npm(1)

Package	Vulnerable range	Fixed in	Dependents
copy-props	—	2.0.5	—

Data Freshness Timeline

(refreshed 7× in last 7d / 7× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 19:31 UTCEG score recompute
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2020-28503?

CVE-2020-28503 is a high vulnerability published on March 23, 2021. The package copy-props before 2.0.5 are vulnerable to Prototype Pollution via the main functionality.

When was CVE-2020-28503 disclosed?

CVE-2020-28503 was first published in the National Vulnerability Database on March 23, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-28503 actively exploited?

CVE-2020-28503 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 69.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-28503?

CVE-2020-28503 has a CVSS v3 base score of 7.3 (NVD).

How do I remediate CVE-2020-28503?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-28503, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-28503

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CVE-2020-28503

📅 Published

🔄 Last Modified

🔗 References (6)