CVE-2026-40879

CVSS Score & Metrics

Base Score

7.5 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H                                    

Vulnerability 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.

Vulnerability Details

Published Date

April 21, 2026

Last Modified

April 24, 2026

CWE ID

CWE-674

Source

NVD

Vendor

nestjs

Product

nest

External References

https://github.com/nestjs/nest/security/advisories/GHSA-hpwf-8g29-85qm

CVSS Score & Metrics

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Vulnerability Details

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