CVE-2026-48933

nodejs: Node.js WebCrypto: Denial of Service via large input to subtle.encrypt()

Published Jun 26, 2026 CVSS 3.1 · 7.5 High EPSS 3.7% KEV · Not listed
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**.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4809-1 nodejs security update
Debian DSA Debian DSA DSA-6517-1 nodejs security update
History
Type Values Removed Values Added
Title Node.js WebCrypto Subtle.encrypt Integer Overflow Crash nodejs: Node.js WebCrypto: Denial of Service via large input to subtle.encrypt()
First Time appeared Redhat
Redhat hummingbird
Weaknesses CWE-770
CPEs cpe:/a:redhat:hummingbird:1
Vendors & Products Redhat
Redhat hummingbird
References
Metrics threat_severity

None

cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Important

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Nodejs
Nodejs nodejs
Vendors & Products Nodejs
Nodejs nodejs
Type Values Removed Values Added
Title Node.js WebCrypto Subtle.encrypt Integer Overflow Crash
Type Values Removed Values Added
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**.
Weaknesses CWE-190
References
Metrics cvssV3_0

{'score': 7.5, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
hackerone
Published
Updated
Aug 10, 2026, 12:05 PM
Reserved
May 26, 2026, 3:00 PM
Status
Modified
Published
Jun 26, 2026, 2:16 AM
Modified
Oct 25, 2026, 10:10 PM
Severity
Important
Public date
Jun 26, 2026, 1:14 AM