Skip to main content
No exploitation reportedFix available

CVE-2023-30581

No exploitation reported by the sources we read.

  • Published2023-11-23
  • Fixed in20.3.1 · 18.16.1 · 16.20.1
  • WeaknessCWE-862

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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

Timeline

dates in UTC
  1. 2023-11-2300:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-30581?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-30581?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
Node.js
BranchAffectedFixed in
20.x≥ 20.0.0, < 20.3.120.3.1
18.x≥ 18.0.0, < 18.16.118.16.1
16.x≥ 16.0.0, < 16.20.116.20.1

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • nodejsAlmaLinux:9all versions · fixed in 1:16.20.1-1.el9_2and 3 other packages
  • nodejsAlmaLinux:9all versions · fixed in 1:18.16.1-1.module_el9.2.0+31+cbae0c8eand 3 other packages
  • nodejsAlmaLinux:8all versions · fixed in 1:16.20.1-1.module_el8.8.0+3594+e74fe53fand 3 other packages
  • nodejsAlmaLinux:8all versions · fixed in 1:18.16.1-1.module_el8.8.0+3595+0818e803and 3 other packages
  • nodejs-nodemonAlmaLinux:9all versions · fixed in 2.0.20-2.module_el9.2.0+29+de583a0b
  • nodejs-nodemonAlmaLinux:8all versions · fixed in 2.0.20-2.module_el8.8.0+3587+ee652244
  • nodejs-nodemonAlmaLinux:8all versions · fixed in 2.0.20-3.module_el8.8.0+3586+d4fc0b72
  • nodejs-packagingAlmaLinux:9all versions · fixed in 2021.06-4.module_el9.1.0+13+d9a595eaand 1 other package

6 more package ranges on OSV.dev

Full record on NVD

Fix

  1. Update Node.js to 20.3.1 · 18.16.1 · 16.20.1

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Published
2023-11-23
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2023-30581?

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

Is CVE-2023-30581 actively exploited?

Active exploitation of CVE-2023-30581 has not been confirmed. Its EPSS score was 1.1% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-30581?

CVE-2023-30581 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Running Node.js? Hear about its next vulnerability

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

No credit card required · No monthly cap on website lookups · 250 API requests/month