CVE-2026-22031
CVE-2026-22031 · Fastify Middie Middleware Path Bypass
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
@fastify/middie is the plugin that adds middleware support on steroids to Fastify. A security vulnerability exists in @fastify/middie prior to version 9.1.0 where middleware registered with a specific path prefix can be bypassed using URL-encoded characters (e.g., `/%61dmin` instead of `/admin`). While the middleware engine fails to match the encoded path and skips execution, the underlying Fastify router correctly decodes the path and matches the route handler, allowing attackers to access protected endpoints without the middleware constraints. Version 9.1.0 fixes the issue.
CVSS 8.4 · Alta · EPSS 0,5% · Corrección disponible
- Publicación
- Actualización
Pila tecnológica: node
Productos y versiones afectados
middie
- Versiones
- < 9.1.0: Afectada
Sin corrección publicada
@fastify/middie npm
- Intervalos de versiones afectados
- SEMVER: < 9.1.0
Actualiza a 9.1.0