CVE-2026-48930 Security feature bypass in node
Attackers can bypass TLS hostname verification using embedded null characters, leading to silent authority rebinding in Node.js applications.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-48930?
CVE-2026-48930 is a medium-severity vulnerability in Nodejs Node.js, published on 26 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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**.
Weakness: CWE-284
Which versions are affected by CVE-2026-48930?
2 open source packages ship an affected version, including node and node-min. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
node Bitnami | From 22.22.3 | 22.23.0, 24.17.0, 26.3.1 |
node-min Bitnami | From 22.22.3 | 22.23.0, 24.17.0, 26.3.1 |
Products include Nodejs Node.js.
How do I fix CVE-2026-48930?
Upgrade node to a fixed version for your release line: 22.23.0, 24.17.0 or 26.3.1.
Is CVE-2026-48930 being exploited?
There is no known exploitation of CVE-2026-48930 in the wild and no public exploit code.
Other vulnerabilities in Nodejs Node.js
Sources
Also known as ALPINE-CVE-2026-48930, AZL-91221, BELL-CVE-2026-48930, BIT-node-2026-48930, BIT-node-min-2026-48930, DEBIAN-CVE-2026-48930 and 6 more.