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Vulnerability record · CVE-2026-48930 · published 26 June 2026

CVE-2026-48930: Nodejs node.js improper access control vulnerability

Nodejs · Node.Js

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**.

9.8 CVSS 3.1 Critical EPSS 0.32% · top 77.1% CWE-284 · Improper access control
9.8CVSS 3.1 base score
0.32%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
26 Jun 2026Last modified by NVD

Description

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**.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://nodejs.org/en/blog/vulnerability/june-2026-security-releases PatchVendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2026-48930), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.