How severe is CVE-2020-28503?

CVE-2020-28503 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2020-28503 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-28503?

CVE-2020-28503 affects Gulpjs Copy-props. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-28503?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-28503 published?

CVE-2020-28503 was published on 2021-03-23 and last updated on 2026-06-17.

CVE-2020-28503

CVE-2020-28503 is a high-severity vulnerability in Gulpjs Copy-props with a CVSS 3.x base score of 7.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v2: 7.5
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Gulpjs Copy-props
Published: 2021-03-23
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2020-28503?: The package copy-props before 2.0.5 are vulnerable to Prototype Pollution via the main functionality.
How severe is CVE-2020-28503?: CVE-2020-28503 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2020-28503 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-28503?: CVE-2020-28503 affects Gulpjs Copy-props. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-28503?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-28503 published?: CVE-2020-28503 was published on 2021-03-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gulpjs:copy-props:*:*:*:*:*:node.js:*:*