CVE-2026-48618 Security feature bypass in node
Node.js TLS hostname normalization mismatch allows attackers to bypass wildcard certificate validation, potentially exposing sensitive data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-48618?
CVE-2026-48618 is a high-severity vulnerability in Nodejs Node.js, published on 26 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A flaw in Node.js TLS hostname handling can cause Node.js unicode dot separator handling can lead to tls wildcard-depth authentication bypass due to resolver and verifier hostname normalization mismat. This can lead to confidentiality impact or bypass of the intended security boundary under affected configurations. This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.
Which versions are affected by CVE-2026-48618?
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-2026-48618?
Upgrade node to a fixed version for your release line: 22.23.0, 24.17.0 or 26.3.1.
Is CVE-2026-48618 being exploited?
There is no known exploitation of CVE-2026-48618 in the wild and no public exploit code.
Other vulnerabilities in Nodejs Node.js
Sources
Also known as ALPINE-CVE-2026-48618, AZL-91224, BELL-CVE-2026-48618, BIT-node-2026-48618, BIT-node-min-2026-48618, DEBIAN-CVE-2026-48618 and 6 more.