What is CVE-2026-48933?

CVE-2026-48933 is a high-severity vulnerability in Nodejs Node, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2026-06-26.

How severe is CVE-2026-48933?

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

Integer overflow in Nodejs Node

CVE-2026-48933

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**.

Vulnerability class: Integer Overflow

EPSS: 0.006 (43.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Nodejs Node — versions 22.22.3, 24.16.0, 26.3.0
Nodejs Node.js — versions 22.22.3, 24.16.0, 26.3.0

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

support@hackerone.com (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-48933?: CVE-2026-48933 is a high-severity vulnerability in Nodejs Node, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2026-06-26.
How severe is CVE-2026-48933?: High severity. CVSS v3 base score is 7.5 out of 10.