Prototype Pollution in copy-props

CRITICAL 9.8CVE-2020-28503 · GHSA-897m-rjf5-jp39 · Published 23/03/2021 · updated 17/06/2026

In short

CVE-2020-28503 is a CRITICAL (CVSS 9.8) vulnerability affecting copy-props (gulpjs), copy-props.
Chance of exploitation in the next 30 days (EPSS): 1.7%, higher than 77.2% of all vulnerabilities.
Fix: update to 2.0.5 or later.

Package	Affected versions	Patched versions
copy-props gulpjs	`< 2.0.5`	`2.0.5`
copy-props npm	`< 2.0.5`	`2.0.5`

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

NVD description

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

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