How severe is CVE-2020-7598?

CVE-2020-7598 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-2020-7598 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-7598?

CVE-2020-7598 primarily affects Substack Minimist. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-7598?

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

When was CVE-2020-7598 published?

CVE-2020-7598 was published on 2020-03-11 and last updated on 2026-06-17.

CVE-2020-7598

CVE-2020-7598 is a medium-severity vulnerability in Substack Minimist 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: 6.8
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1321
Affected product: Substack Minimist
Published: 2020-03-11
Last modified: 2026-06-17

Description

minimist before 1.2.2 could be tricked into adding or modifying properties of Object.prototype using a "constructor" or "__proto__" payload.

Frequently asked questions

What is CVE-2020-7598?: minimist before 1.2.2 could be tricked into adding or modifying properties of Object.prototype using a "constructor" or "__proto__" payload.
How severe is CVE-2020-7598?: CVE-2020-7598 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-2020-7598 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-7598?: CVE-2020-7598 primarily affects Substack Minimist. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-7598?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-7598 published?: CVE-2020-7598 was published on 2020-03-11 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:substack:minimist:*:*:*:*:*:node.js:*:*
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*

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