How severe is CVE-2021-23417?

CVE-2021-23417 has a CVSS 3.x base score of 5.6, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2021-23417 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-23417?

CVE-2021-23417 affects Deepmergefn Project Deepmergefn. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-23417?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-23417 published?

CVE-2021-23417 was published on 2021-07-28 and last updated on 2026-06-17.

CVE-2021-23417

CVE-2021-23417 is a medium-severity vulnerability in Deepmergefn Project Deepmergefn with a CVSS 3.x base score of 5.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1321.

Key facts

Severity: Medium (CVSS 3.x base score 5.6)
CVSS v2: 7.5
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1321
Affected product: Deepmergefn Project Deepmergefn
Published: 2021-07-28
Last modified: 2026-06-17

Description

All versions of package deepmergefn are vulnerable to Prototype Pollution via deepMerge function.

Frequently asked questions

What is CVE-2021-23417?: All versions of package deepmergefn are vulnerable to Prototype Pollution via deepMerge function.
How severe is CVE-2021-23417?: CVE-2021-23417 has a CVSS 3.x base score of 5.6, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2021-23417 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-23417?: CVE-2021-23417 affects Deepmergefn Project Deepmergefn. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-23417?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-23417 published?: CVE-2021-23417 was published on 2021-07-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:deepmergefn_project:deepmergefn:*:*:*:*:*:node.js:*:*

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