How severe is CVE-2021-23470?

CVE-2021-23470 has a CVSS 3.x base score of 8.2, 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 low, and availability high.

Is CVE-2021-23470 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-23470?

CVE-2021-23470 affects Putil-merge Project Putil-merge. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-23470?

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-2021-23470 published?

CVE-2021-23470 was published on 2022-02-04 and last updated on 2026-06-17.

CVE-2021-23470

CVE-2021-23470 is a high-severity vulnerability in Putil-merge Project Putil-merge with a CVSS 3.x base score of 8.2. 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 8.2)
CVSS v2: 7.5
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1321
Affected product: Putil-merge Project Putil-merge
Published: 2022-02-04
Last modified: 2026-06-17

Description

This affects the package putil-merge before 3.8.0. The merge() function does not check the values passed into the argument. An attacker can supply a malicious value by adjusting the value to include the constructor property. Note: This vulnerability derives from an incomplete fix in https://security.snyk.io/vuln/SNYK-JS-PUTILMERGE-1317077

Frequently asked questions

What is CVE-2021-23470?: This affects the package putil-merge before 3.8.0. The merge() function does not check the values passed into the argument. An attacker can supply a malicious value by adjusting the value to include the constructor property. Note: This vulnerability derives from an incomplete fix in https://security.snyk.io/vuln/SNYK-JS-PUTILMERGE-1317077
How severe is CVE-2021-23470?: CVE-2021-23470 has a CVSS 3.x base score of 8.2, 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 low, and availability high.
Is CVE-2021-23470 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-23470?: CVE-2021-23470 affects Putil-merge Project Putil-merge. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-23470?: 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-2021-23470 published?: CVE-2021-23470 was published on 2022-02-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:putil-merge_project:putil-merge:*:*:*:*:*:*:*:*

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