GHSA-8wpr-639p-ccrj · Severity: medium · Ecosystem: npm — Nest has a Fastify URL Encoding Middleware Bypass (TOCTOU)
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]`.
Conclusion & alert: CVE-2025-69211 is rated Exploit Available (52.4/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.36%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.05% | 0.36% | +0.31% |
| 2 | 2026-02-21 | 0.06% | 0.05% | -0.01% |
| 3 | 2026-02-18 | — | 0.06% | — |
Full EPSS history (5 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.9 | 4.0 | MEDIUM |
|
— | — | [email protected] |
| 7.4 | 3.1 | HIGH |
|
2.2 | 5.2 | [email protected] |
GHSA-8wpr-639p-ccrj · Severity: medium · Ecosystem: npm — Nest has a Fastify URL Encoding Middleware Bypass (TOCTOU)
| vendor | priority | summary | link |
|---|---|---|---|
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2025-69211 |
| URL | Tags |
|---|---|
| https://github.com/nestjs/nest/commit/c4cedda15a05aafec1e6045b36b0335ab850e771 | Patch |
| https://github.com/nestjs/nest/security/advisories/GHSA-8wpr-639p-ccrj | Exploit Vendor Advisory |