How severe is CVE-2020-28438?

CVE-2020-28438 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-2020-28438 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-28438?

CVE-2020-28438 affects Deferred-exec Project Deferred-exec. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-28438?

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-2020-28438 published?

CVE-2020-28438 was published on 2022-07-25 and last updated on 2026-06-17.

CVE-2020-28438

CVE-2020-28438 is a critical-severity vulnerability in Deferred-exec Project Deferred-exec 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-77.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-77
Affected product: Deferred-exec Project Deferred-exec
Published: 2022-07-25
Last modified: 2026-06-17

Description

This affects all versions of package deferred-exec. The injection point is located in line 42 in lib/deferred-exec.js

Frequently asked questions

What is CVE-2020-28438?: This affects all versions of package deferred-exec. The injection point is located in line 42 in lib/deferred-exec.js
How severe is CVE-2020-28438?: CVE-2020-28438 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-2020-28438 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-28438?: CVE-2020-28438 affects Deferred-exec Project Deferred-exec. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-28438?: 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-2020-28438 published?: CVE-2020-28438 was published on 2022-07-25 and last updated on 2026-06-17.

References

https://security.snyk.io/vuln/SNYK-JS-DEFERREDEXEC-1050433

Affected products (1)

cpe:2.3:a:deferred-exec_project:deferred-exec:*:*:*:*:*:node.js:*:*

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