How severe is CVE-2021-23329?

CVE-2021-23329 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-2021-23329 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-23329?

CVE-2021-23329 affects Getadigital Nested-object-assign. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-23329?

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-2021-23329 published?

CVE-2021-23329 was published on 2021-01-31 and last updated on 2026-06-17.

CVE-2021-23329

CVE-2021-23329 is a high-severity vulnerability in Getadigital Nested-object-assign 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. The underlying weakness is classified as CWE-1321.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1321
Affected product: Getadigital Nested-object-assign
Published: 2021-01-31
Last modified: 2026-06-17

Description

The package nested-object-assign before 1.0.4 are vulnerable to Prototype Pollution via the default function, as demonstrated by running the PoC below.

Frequently asked questions

What is CVE-2021-23329?: The package nested-object-assign before 1.0.4 are vulnerable to Prototype Pollution via the default function, as demonstrated by running the PoC below.
How severe is CVE-2021-23329?: CVE-2021-23329 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-2021-23329 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-23329?: CVE-2021-23329 affects Getadigital Nested-object-assign. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-23329?: 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-2021-23329 published?: CVE-2021-23329 was published on 2021-01-31 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:getadigital:nested-object-assign:*:*:*:*:*:node.js:*:*

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