What is CVE-2026-48928?

CVE-2026-48928 is a medium-severity vulnerability in Nodejs Node, classified under Improper Access Control. CVSS score: 5.4/10. Published 2026-06-26.

How severe is CVE-2026-48928?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in Nodejs Node

CVE-2026-48928

A inconsistency in Node.js hostname matching can cause a trust-policy bypass in multi-context mTLS setups. This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.

EPSS: 0.002 (15.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

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

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

support@hackerone.com (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-48928?: CVE-2026-48928 is a medium-severity vulnerability in Nodejs Node, classified under Improper Access Control. CVSS score: 5.4/10. Published 2026-06-26.
How severe is CVE-2026-48928?: Medium severity. CVSS v3 base score is 5.4 out of 10.