Nest is a framework for building scalable Node.js server-side applications. Prior to 11.1.19, when an attacker sends many small, valid JSON messages in one TCP frame, handleData() recurses once per message; the buffer shrinks each call. maxBufferSize is never reached; call stack overflows instead. A ~47 KB payload is sufficient to trigger RangeError. This vulnerability is fixed in 11.1.19.

Project Subscriptions

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-hpwf-8g29-85qm Nest Affected by DoS via Recursive handleData in JsonSocket (TCP Transport)
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 22 Apr 2026 00:00:00 +0000

Type Values Removed Values Added
Description Nest is a framework for building scalable Node.js server-side applications. Prior to 11.1.19, when an attacker sends many small, valid JSON messages in one TCP frame, handleData() recurses once per message; the buffer shrinks each call. maxBufferSize is never reached; call stack overflows instead. A ~47 KB payload is sufficient to trigger RangeError. This vulnerability is fixed in 11.1.19.
Title Nest: DoS via Recursive handleData in JsonSocket (TCP Transport)
Weaknesses CWE-674
References
Metrics 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'}

ssvc

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


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-04-21T19:38:04.805Z

Reserved: 2026-04-15T15:57:41.719Z

Link: CVE-2026-40879

cve-icon Vulnrichment

Updated: 2026-04-21T19:37:59.587Z

cve-icon NVD

Status : Received

Published: 2026-04-21T20:17:01.533

Modified: 2026-04-21T20:17:01.533

Link: CVE-2026-40879

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses