NestJS 11.1.13 - Lack of data validation allowing authentication/authorization bypass
Priority HIGH 69CWE-863Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-863.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00764 55th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed @nestjs/platform-fastify (npm): 11.1.14
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| nestjs | nest.js | 11.1.13 | — | No fix listed | CNA |
| — | @nestjs/platform-fastify (npm) | before 11.1.14 | 11.1.14 | Patch available | GHSA-r4wm-x892-vjmx |
- nest.js Vendornestjs Affected 11.1.13 Fixed in — No fix listed CNA
- @nestjs/platform-fastify (npm) Vendor— Affected before 11.1.14 Fixed in 11.1.14 Patch available GHSA-r4wm-x892-vjmx
Remediation
- Fix · GHSA-r4wm-x892-vjmx @nestjs/platform-fastify (npm) Fixed in 11.1.14 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
Not affected: 2 products
- Red Hat Developer Hub 1
- Red Hat OpenShift Container Platform 4
Timeline
- 2026-10-02 Threatist record created from CVE-2026-2293
- 2026-10-03 Alias added: GHSA-r4wm-x892-vjmx
- 2026-10-27 Affected versions changed · Red Hat
References
More nestjs Nest vulnerabilities
- TI-2025-42665 Nest has a Fastify URL Encoding Middleware Bypass (TOCTOU) CVSS 4.0MEDIUM 6.9
- TI-2024-19449 File Upload vulnerability in nestjs nest v.10.3.2 allows a remote attacker to execute… CVSS 3.1MEDIUM 5.5
- TI-2026-25458 Nest Fastify HEAD Request Middleware Bypass CVSS 4.0HIGH 8.7
- TI-2026-29535 Nest: DoS via Recursive handleData in JsonSocket (TCP Transport) CVSS 3.1HIGH 7.5
- TI-2026-27632 @nestjs/core Improperly Neutralizes Special Elements in Output Used by a Downstream Component ('Injection') CVSS 4.0MEDIUM 6.3
- TI-2023-11333 Information disclosure in @nestjs/core CVSS 3.1MEDIUM 5.3
Sources
- CVE-2026-2293 · CVE Program
- CVE-2026-2293 · NVD
- FIRST EPSS
- GHSA-r4wm-x892-vjmx · GitHub Advisory Database · CC BY 4.0
- CVE-2026-2293 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences