How severe is CVE-2020-7608?

CVE-2020-7608 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2020-7608 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-7608?

CVE-2020-7608 affects Yargs Yargs-parser. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-7608?

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

When was CVE-2020-7608 published?

CVE-2020-7608 was published on 2020-03-16 and last updated on 2026-06-17.

CVE-2020-7608

CVE-2020-7608 is a medium-severity vulnerability in Yargs Yargs-parser with a CVSS 3.x base score of 5.3. 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 5.3)
CVSS v2: 4.6
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1321
Affected product: Yargs Yargs-parser
Published: 2020-03-16
Last modified: 2026-06-17

Description

yargs-parser could be tricked into adding or modifying properties of Object.prototype using a "__proto__" payload.

Frequently asked questions

What is CVE-2020-7608?: yargs-parser could be tricked into adding or modifying properties of Object.prototype using a "__proto__" payload.
How severe is CVE-2020-7608?: CVE-2020-7608 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2020-7608 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-7608?: CVE-2020-7608 affects Yargs Yargs-parser. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-7608?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-7608 published?: CVE-2020-7608 was published on 2020-03-16 and last updated on 2026-06-17.

References

https://snyk.io/vuln/SNYK-JS-YARGSPARSER-560381

Affected products (1)

cpe:2.3:a:yargs:yargs-parser:*:*:*:*:*:node.js:*:*

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