GitHub Advisoryadvisory · npm

GHSA-hpwf-8g29-85qm Nest Affected by DoS via Recursive handleData in JsonSocket (TCP Transport)

HIGH Published 2026-04-14 Modified 2026-04-27 Official page ↗
Aliases
CVE-2026-40879
Ecosystem
npm
Packages
@nestjs/microservices
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-674, CWE-770
Reviewed
2026-04-14

Affected packages

• npm @nestjs/microservices: < 11.1.19 → fixed in 11.1.19

Description

Impact Attacker sends many small, valid JSON messages in one TCP frame → handleData() recurses once per message; buffer shrinks each call → maxBufferSize is never reached; call stack overflows instead → A ~47 KB payload is sufficient to trigger RangeError Patches Fixed in `@nestjs/[email protected]` References Discovered by https://github.com/hwpark6804-gif

Related

Alias · CVE (1)

  • CVE-2026-40879 Nest is a framework for building scalable Node.js server-side applications. vulnerability

Weakness · CWE (2)

  • CWE-674 Uncontrolled Recursion weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling weakness

References