How severe is CVE-2022-37621?

CVE-2022-37621 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-2022-37621 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-37621?

CVE-2022-37621 affects Browserify-shim Project Browserify-shim. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-37621?

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-2022-37621 published?

CVE-2022-37621 was published on 2022-10-28 and last updated on 2026-06-17.

CVE-2022-37621

CVE-2022-37621 is a critical-severity vulnerability in Browserify-shim Project Browserify-shim 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-1321.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1321
Affected product: Browserify-shim Project Browserify-shim
Published: 2022-10-28
Last modified: 2026-06-17

Description

Prototype pollution vulnerability in function resolveShims in resolve-shims.js in thlorenz browserify-shim 3.8.15 via the fullPath variable in resolve-shims.js.

Frequently asked questions

What is CVE-2022-37621?: Prototype pollution vulnerability in function resolveShims in resolve-shims.js in thlorenz browserify-shim 3.8.15 via the fullPath variable in resolve-shims.js.
How severe is CVE-2022-37621?: CVE-2022-37621 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-2022-37621 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-37621?: CVE-2022-37621 affects Browserify-shim Project Browserify-shim. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-37621?: 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-2022-37621 published?: CVE-2022-37621 was published on 2022-10-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:browserify-shim_project:browserify-shim:3.8.15:*:*:*:*:node.js:*:*

More vulnerabilities in Browserify-shim Project Browserify-shim

CVE-2022-37623 — Critical (CVSS 9.8): Prototype pollution vulnerability in function resolveShims in resolve-shims.js in thlorenz browserify-shim 3.8.15 via…
CVE-2022-37617 — Critical (CVSS 9.8): Prototype pollution vulnerability in function resolveShims in resolve-shims.js in thlorenz browserify-shim 3.8.15 via…

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