Uncaught Exception Affecting @nestjs/microservices package, versions <11.2.4>=12.0.0-alpha.0 <12.0.2
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-NESTJSMICROSERVICES-20251033
- published29 Sept 2026
- disclosed28 Sept 2026
- creditzerovulnlabs
Introduced: 28 Sep 2026
NewCVE-2026-102281 (opens in a new tab)How to fix?
Upgrade @nestjs/microservices to version 11.2.4, 12.0.2 or higher.
Overview
@nestjs/microservices is a Nest - modern, fast, powerful node.js web framework (@microservices)
Affected versions of this package are vulnerable to Uncaught Exception via unguarded JSON.stringify calls on client-controlled message patterns in the TCP and RMQ server handlers (ServerTCP.handleMessage and ServerRMQ.handleMessage). An attacker can send a message with a deeply nested pattern object, causing JSON.stringify to throw a RangeError. Because the resulting promise rejection is left unhandled, the Node.js process terminates.