Bug 2443367 (CVE-2026-2293)

Summary: CVE-2026-2293 nestjs: NestJS: Authentication bypass via Fastify path-normalization
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: abarbaro, alizardo, caswilli, jchui, jhe, kaycoth, ktsao, nboldt, psrna
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in NestJS. When a NestJS application uses @nestjs/platform-fastify with Fastify path-normalization options enabled, a remote attacker can exploit this to bypass authentication and authorization middleware. This bypass allows unauthorized access to protected resources, compromising the application's security controls.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-02-27 17:01:35 UTC
A NestJS application using @nestjs/platform-fastify can allow bypass of authentication/authorization middleware when Fastify path-normalization options are enabled.



This issue affects nest.Js: 11.1.13.