How severe is CVE-2020-28439?

CVE-2020-28439 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-2020-28439 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-28439?

CVE-2020-28439 affects Corenlp-js-prefab Project Corenlp-js-prefab. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-28439?

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-2020-28439 published?

CVE-2020-28439 was published on 2020-12-11 and last updated on 2026-06-17.

CVE-2020-28439

CVE-2020-28439 is a critical-severity vulnerability in Corenlp-js-prefab Project Corenlp-js-prefab 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-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Corenlp-js-prefab Project Corenlp-js-prefab
Published: 2020-12-11
Last modified: 2026-06-17

Description

This affects all versions of package corenlp-js-prefab. The injection point is located in line 10 in 'index.js.' It depends on a vulnerable package 'corenlp-js-interface.' Vulnerability can be exploited with the following PoC:

Frequently asked questions

What is CVE-2020-28439?: This affects all versions of package corenlp-js-prefab. The injection point is located in line 10 in 'index.js.' It depends on a vulnerable package 'corenlp-js-interface.' Vulnerability can be exploited with the following PoC:
How severe is CVE-2020-28439?: CVE-2020-28439 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-2020-28439 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-28439?: CVE-2020-28439 affects Corenlp-js-prefab Project Corenlp-js-prefab. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-28439?: 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-2020-28439 published?: CVE-2020-28439 was published on 2020-12-11 and last updated on 2026-06-17.

References

https://snyk.io/vuln/SNYK-JS-CORENLPJSPREFAB-1050434

Affected products (1)

cpe:2.3:a:corenlp-js-prefab_project:corenlp-js-prefab:*:*:*:*:*:node.js:*:*

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