CVE-2026-48619: A flaw in Node.js HTTP/2 client allows a server to sen
CVE-2026-48619 analysis covering impact, affected products, versions, remediation, and cross-checked defender guidance.
CVE-2026-48619 is a vulnerability published by NVD on 6/26/2026.
What happened
A flaw in Node.js HTTP/2 client allows a server to send an unlimited number of ORIGIN frames, which could lead to an Out of Memory error on the client.
This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.
Affected products and versions
- nodejs node.js 22.22.3
- nodejs node.js 24.16.0
- nodejs node.js 26.3.0
Severity and weakness
CVSS: HIGH 7.5. Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Weaknesses: CWE-400.
Known exploitation
No CISA KEV entry is currently attached to the NVD record.
What defenders should do
- Identify whether the affected product and version range exists in production.
- Review vendor advisories and release notes before change windows.
- Patch, upgrade, disable the vulnerable component, or apply vendor mitigations.
- Verify the running version after deployment, not only the package inventory.