CVE-2026-6556

Katalog CVE

CVSS 9.1 · Critical EPSS 0,52%

Kerentanan Improper Authorization pada fastify/express. Skor CVSS 3.1 9.1 (Critical) menurut CNA.

Deskripsi (NVD)

@fastify/express versions 4.0.6 and earlier only rewrite the plugin prefix for middleware mount paths when the path argument is a string. Non-string mount paths (arrays of paths and regular expressions) are left unprefixed inside prefixed plugin scopes, so middleware registered with those forms does not match the actual prefixed request path. Applications that use path-scoped middleware for authentication, authorization, rate limiting, or auditing on routes inside a prefixed scope can be bypassed by sending a request to the prefixed route, because Fastify still matches the route but the middleware is skipped. Patches: upgrade to @fastify/express 4.0.7. Workarounds: use string mount paths instead of arrays or regular expressions in prefixed plugins, or register one use call per path.

Rincian

Terbit di NVD

30 Juni 2026

Terakhir diubah

1 Juli 2026

Status NVD

Analyzed

CVSS 3.1

9.1 (Critical), sumber CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-285: Improper Authorization

EPSS (30 hari)

0,52% peluang dieksploitasi; lebih tinggi dari 42,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://cna.openjsf.org/security-advisories.html advisory vendor
• https://github.com/fastify/fastify-express/security/advisories/GHSA-3wf5-7852-vcfq mitigasi · advisory vendor