CVE-2026-48933

Modified Modified - Updated After Analysis

Process Crash in Node.js WebCrypto Due to 2GiB Input Size

Publication date: 2026-06-26

Last updated on: 2026-07-16

Assigner: HackerOne

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**.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-06-26

Last Modified

2026-07-16

Generated

2026-07-17

AI Q&A

2026-06-26

EPSS Evaluated

2026-07-16

NVD

CVE-2026-48933

EUVD

EUVD-2026-39609

Affected Vendors & Products

Vendor	Product	Version / Range
nodejs	node.js	26.3.0
nodejs	node.js	24.16.0
nodejs	node.js	22.22.3

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-770	The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.
CWE-190	The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Attack-Flow Graph

Executive Summary

This vulnerability is a flaw in the Node.js WebCrypto implementation where the process crashes if the input to the subtle.encrypt() function is exactly a multiple of 2 GiB in size.

Impact Analysis

The impact of this vulnerability is that the Node.js process can crash unexpectedly when handling encryption operations with input sizes that are multiples of 2 GiB, potentially causing denial of service.

Compliance Impact

The vulnerability in Node.js WebCrypto implementation causes a process crash when the input to subtle.encrypt() is a multiple of 2GiB. This results in an availability impact (denial of service) but does not affect confidentiality or integrity.

Since the vulnerability does not lead to data leakage or unauthorized access, it does not directly compromise data protection requirements under standards like GDPR or HIPAA. However, the availability impact could affect system reliability and uptime, which may indirectly influence compliance depending on the criticality of the affected systems.

No explicit information is provided about compliance impact in the available resources.

Mitigation Strategies

This vulnerability affects all supported Node.js release lines: 22, 24, and 26.

To mitigate this vulnerability, users should update Node.js to the latest patched versions where the issue has been fixed.

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