Vulnerability in Node.js Node

CVE-2026-48930

A flaw in Node.js TLS hostname handling can cause Embedded-nul hostnames can lead to silent authority rebinding due to c-string truncation in resolver bindings. This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (22.9th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 22.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-48930: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

  • Node.js Node — versions 22.22.3, 24.16.0, 26.3.0
  • Node.js — versions 22.22.3, 24.16.0, 26.3.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-48930?
CVE-2026-48930 is a critical-severity vulnerability in Node.js Node, classified under Improper Access Control. CVSS score: 9.8/10. Published 2026-06-26.
How severe is CVE-2026-48930?
Critical severity. CVSS v3 base score is 9.8 out of 10.