CVE-2026-48933 Denial of service in node
An attacker can crash the Node.js process by providing specific large inputs to the WebCrypto encryption function, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-48933?
CVE-2026-48933 is a high-severity denial of service 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 WebCrypto implementation can crash the process if the input of `subtle.encrypt()` is a multiple of 2GiB. This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.
Which versions are affected by CVE-2026-48933?
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-2026-48933?
Upgrade node to a fixed version for your release line: 22.23.0, 24.17.0 or 26.3.1.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-48933 being exploited?
There is no known exploitation of CVE-2026-48933 in the wild and no public exploit code.
Other vulnerabilities in Nodejs Node.js
Sources
Also known as ALPINE-CVE-2026-48933, AZL-91203, BELL-CVE-2026-48933, BIT-node-2026-48933, BIT-node-min-2026-48933, DEBIAN-CVE-2026-48933 and 6 more.