How severe is CVE-2020-7673?

CVE-2020-7673 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-7673 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-7673?

CVE-2020-7673 affects Node-extend Project Node-extend. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-7673?

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

When was CVE-2020-7673 published?

CVE-2020-7673 was published on 2020-06-10 and last updated on 2026-06-17.

CVE-2020-7673

CVE-2020-7673 is a critical-severity vulnerability in Node-extend Project Node-extend with a CVSS 3.x base score of 9.8. 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-94.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Node-extend Project Node-extend
Published: 2020-06-10
Last modified: 2026-06-17

Description

node-extend through 0.2.0 is vulnerable to Arbitrary Code Execution. User input provided to the argument `A` of `extend` function`(A,B,as,isAargs)` located within `lib/extend.js` is executed by the `eval` function, resulting in code execution.

Frequently asked questions

What is CVE-2020-7673?: node-extend through 0.2.0 is vulnerable to Arbitrary Code Execution. User input provided to the argument `A` of `extend` function`(A,B,as,isAargs)` located within `lib/extend.js` is executed by the `eval` function, resulting in code execution.
How severe is CVE-2020-7673?: CVE-2020-7673 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-7673 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-7673?: CVE-2020-7673 affects Node-extend Project Node-extend. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-7673?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-7673 published?: CVE-2020-7673 was published on 2020-06-10 and last updated on 2026-06-17.

References

https://snyk.io/vuln/SNYK-JS-NODEEXTEND-571491

Affected products (1)

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

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