Always-Incorrect Control Flow Implementation Affecting @nestjs/core package, versions <11.1.17
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Test your applications- Snyk IDSNYK-JS-NESTJSCORE-15682556
- published18 Mar 2026
- disclosed17 Mar 2026
- creditUnknown
Introduced: 17 Mar 2026
NewCVE-2026-33011 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade @nestjs/core to version 11.1.17 or higher.
Overview
@nestjs/core is a Nest - modern, fast, powerful node.js web framework (@core)
Affected versions of this package are vulnerable to Always-Incorrect Control Flow Implementation when handling a @nestjs/platform-fastify HEAD request. An attacker can bypass middleware logic by sending malicious requests, which are redirected to GET handlers by fastify by default.