CVE-2025-69211

Description

Nest is a framework for building scalable Node.js server-side applications. Versions prior to 11.1.11 have a Fastify URL encoding middleware bypass. A NestJS application is vulnerable if it uses `@nestjs/platform-fastify`; relies on `NestMiddleware` (via `MiddlewareConsumer`) for security checks (authentication, authorization, etc.), or through `app.use()`; and applies middleware to specific routes using string paths or controllers (e.g., `.forRoutes('admin')`). Exploitation can result in unauthenticated users accessing protected routes, restricted administrative endpoints becoming accessible to lower-privileged users, and/or middleware performing sanitization or validation being skipped. This issue is patched in `@nestjs/[email protected]`.

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CVSS v3.1 Score

7.4

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Weakness Type (CWE)

CWE-367 CWE-367

Affected Products

Vendor	Product	Versions
nestjs	nest	< 11.1.11

References

Advisories & Patches

https://github.com/nestjs/nest/commit/c4cedda15a05aafec1e6045b36b0335ab850e771 https://github.com/nestjs/nest/security/advisories/GHSA-8wpr-639p-ccrj

Exploits

https://github.com/nestjs/nest/security/advisories/GHSA-8wpr-639p-ccrj

Frequently Asked Questions

What is CVE-2025-69211? +

Nest is a framework for building scalable Node.js server-side applications. Versions prior to 11.1.11 have a Fastify URL encoding middleware bypass. A NestJS application is vulnerable if it uses `@nestjs/platform-fastify`; relies on `NestMiddleware` (via `MiddlewareConsumer`) for security checks (authentication, authorization, etc.), or through `app.use()`; and applies middleware to specific routes using string paths or controllers (e.g., `.forRoutes('admin')`). Exploitation can result in unauthenticated users accessing protected routes, restricted administrative endpoints becoming accessible to lower-privileged users, and/or middleware performing sanitization or validation being skipped. This issue is patched in `@nestjs/[email protected]`. It has a CVSS v3.1 base score of 7.4 (HIGH).

How severe is CVE-2025-69211? +

CVE-2025-69211 has a CVSS v3.1 score of 7.4 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-69211? +

CVE-2025-69211 affects products from nestjs, specifically: nest. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-69211? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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