Critical severity · published Feb 27, 2026
CVE-2026-2293
NestJS 11.1.13 - Lack of data validation allowing authentication/authorization bypass
9.8
CVSS
0.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 55% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NE
nest.js · nest.js
11.1.13 · source: vendor
NE
Nest · Nestjs
11.1.13 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-2293
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-2293
Exploit
https://fluidattacks.com/advisories/neton
Product
https://github.com/nestjs/nest/
Release Notes
https://github.com/nestjs/nest/releases/tag/v11.1.14
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-2293
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2443367
security.access.redhat.com
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2293.json