How severe is CVE-2021-23702?

CVE-2021-23702 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability low.

Is CVE-2021-23702 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-23702?

CVE-2021-23702 affects Object-extend Project Object-extend. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-23702?

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-2021-23702 published?

CVE-2021-23702 was published on 2022-02-18 and last updated on 2026-06-17.

CVE-2021-23702

CVE-2021-23702 is a high-severity vulnerability in Object-extend Project Object-extend with a CVSS 3.x base score of 7.6. 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: High (CVSS 3.x base score 7.6)
CVSS v2: 7.5
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1321
Affected product: Object-extend Project Object-extend
Published: 2022-02-18
Last modified: 2026-06-17

Description

The package object-extend from 0.0.0 are vulnerable to Prototype Pollution via object-extend.

Frequently asked questions

What is CVE-2021-23702?: The package object-extend from 0.0.0 are vulnerable to Prototype Pollution via object-extend.
How severe is CVE-2021-23702?: CVE-2021-23702 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability low.
Is CVE-2021-23702 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-23702?: CVE-2021-23702 affects Object-extend Project Object-extend. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-23702?: 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-2021-23702 published?: CVE-2021-23702 was published on 2022-02-18 and last updated on 2026-06-17.

References

https://snyk.io/vuln/SNYK-JS-OBJECTEXTEND-2401470

Affected products (1)

cpe:2.3:a:object-extend_project:object-extend:*:*:*:*:*:node.js:*:*

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