What is CVE-2026-48937?

CVE-2026-48937 is a high-severity vulnerability in Node.js Node, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-06-18.

How severe is CVE-2026-48937?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Node.js Node

CVE-2026-48937

A flaw in Node.js HTTP/2 server API can cause servers to keep accepting data even after sending a `GOAWAY` frame. This vulnerability affects two supported release lines: **Node.js 22** and **Node.js 24**.

Vulnerability class: DoS (Denial of Service)

Published 2026-06-18 · last modified 2026-08-18.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.006 (45.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

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

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

nodejs.org/en/blog/vulnerability/june-2026-security-releases (Patch, Vendor Advisory)
hackerone.com/reports/3658225 (Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2026-48937?: CVE-2026-48937 is a high-severity vulnerability in Node.js Node, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-06-18.
How severe is CVE-2026-48937?: High severity. CVSS v3 base score is 7.5 out of 10.