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Vulnerability · Published Sep 28, 2026 · Assigned by GitHub_M

CVE-2026-102281Nest: Remote process termination via a deeply nested microservice message pattern

High 7.5

In plain English

A high-severity security flaw in nest from nestjs. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.6%top 51.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

Nest is a framework for building scalable Node.js server-side applications. Prior to 11.2.4 and 12.0.2, a single message with a deeply nested object in its pattern can terminate a NestJS microservice using the TCP or RabbitMQ transport. ServerTCP#handleMessage and ServerRMQ#handleMessage pass a client-controlled non-string pattern to JSON.stringify to derive the handler lookup key; sufficiently deep nesting throws RangeError: Maximum call stack size exceeded, and the unhandled promise rejection terminates Node.js under its default behavior. An attacker who can reach the TCP port or publish to the consumed RabbitMQ queue or exchange can crash the service on demand; other transports are not affected because their patterns arrive as strings. This issue is fixed in versions 11.2.4 and 12.0.2.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
npm@nestjs/microservices11.2.4GHSA-m8vh-jmq9-5rjg
npm@nestjs/microservices12.0.2GHSA-m8vh-jmq9-5rjg

Affected products (as reported)

VendorProductVersions
nestjs nest < 11.2.4>= 12.0.0, < 12.0.2

Weakness: CWE-248, CWE-674 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References