How severe is CVE-2020-28442?

CVE-2020-28442 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-28442 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-28442?

CVE-2020-28442 affects Js-data. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-28442?

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-2020-28442 published?

CVE-2020-28442 was published on 2020-12-15 and last updated on 2026-06-17.

CVE-2020-28442

CVE-2020-28442 is a high-severity vulnerability in Js-data with a CVSS 3.x base score of 7.5. 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 7.5)
CVSS v2: 7.5
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Js-data
Published: 2020-12-15
Last modified: 2026-06-17

Description

All versions of package js-data are vulnerable to Prototype Pollution via the deepFillIn function.

Frequently asked questions

What is CVE-2020-28442?: All versions of package js-data are vulnerable to Prototype Pollution via the deepFillIn function.
How severe is CVE-2020-28442?: CVE-2020-28442 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-28442 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-28442?: CVE-2020-28442 affects Js-data. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-28442?: 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-2020-28442 published?: CVE-2020-28442 was published on 2020-12-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:js-data:js-data:*:*:*:*:*:*:*:*

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