CVE-2026-2293

NestJS 11.1.13 - Lack of data validation allowing authentication/authorization bypass

State: Published
Severity: 8.2 High
Published: Feb 27, 2026
Updated: Jul 15, 2026
Reserved: Feb 10, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	8.2 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N	Fluid Attacks
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N	redhat-SADP

Weaknesses

CWE-863 Incorrect Authorization
CWE-551 Incorrect Behavior Order: Authorization Before Parsing and Canonicalization

Affected Products

Product	Versions
nest.jsnest.js	11.1.13Affected

References

https://fluidattacks.com/advisories/netonthird-party-advisory
https://github.com/nestjs/nest/product
https://github.com/nestjs/nest/releases/tag/v11.1.14patch
https://access.redhat.com/security/cve/CVE-2026-2293vdb-entry
RHBZ#2443367issue-tracking
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2293.json

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