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CVE-2023-30581

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-11-23 · updated 2026-06-17
• Weakness: CWE-862

Description

The use of __proto__ in process.mainModule.__proto__.require() can bypass the policy mechanism and require modules outside of the policy.json definition. This vulnerability affects all users using the experimental policy mechanism in all active release lines: v16, v18 and, v20. Please note that at the time this CVE was issued, the policy is an experimental feature of Node.js

Affected products

• Node.js: from 16.0.0 before 16.20.1; from 18.0.0 before 18.16.1; from 20.0.0 before 20.3.1 — fixed in 16.20.1, 18.16.1, 20.3.1

How to fix

Upgrade to a fixed version: Node.js 16.20.1, 18.16.1, 20.3.1. Check the vendor advisory for mitigations.

References

• https://nodejs.org/en/blog/vulnerability/june-2023-security-releases
• https://nodejs.org/en/blog/vulnerability/june-2023-security-releases
• https://security.netapp.com/advisory/ntap-20241101-0011/

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