How severe is CVE-2020-7771?

CVE-2020-7771 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-2020-7771 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-7771?

CVE-2020-7771 affects Asciitable.js Project Asciitable.js. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-7771?

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-2020-7771 published?

CVE-2020-7771 was published on 2021-01-04 and last updated on 2026-06-17.

CVE-2020-7771

CVE-2020-7771 is a high-severity vulnerability in Asciitable.js Project Asciitable.js 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: 7.5
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1321
Affected product: Asciitable.js Project Asciitable.js
Published: 2021-01-04
Last modified: 2026-06-17

Description

The package asciitable.js before 1.0.3 are vulnerable to Prototype Pollution via the main function.

Frequently asked questions

What is CVE-2020-7771?: The package asciitable.js before 1.0.3 are vulnerable to Prototype Pollution via the main function.
How severe is CVE-2020-7771?: CVE-2020-7771 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-2020-7771 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-7771?: CVE-2020-7771 affects Asciitable.js Project Asciitable.js. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-7771?: 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-2020-7771 published?: CVE-2020-7771 was published on 2021-01-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:asciitable.js_project:asciitable.js:*:*:*:*:*:node.js:*:*

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