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Next.js: Unauthenticated disclosure of internal Server Function endpoints

  • Publicada: 22.07.2026
  • Actualizado: 11.10.2026 10:22

Impact

In Next.js applications using App Router, Server Actions (use server) or use cache endpoints can be disclosed bypassing any authentication on the pages where these endpoints are usually used.

Server Action IDs can be disclosed to unauthenticated users via publicly served client artifacts (for example, static chunks containing action references).

Affected users are applications using App Router + Server Actions.

By itself, this disclosure is typically a recon/enumeration primitive; however, it can increase risk when combined with other weaknesses.

Workarounds

Never assume any authentication claims at the use cache or use server boundary. Always authenticate within the boundary.

Software afectado

Haz clic en una tecnología para ver todas sus vulnerabilidades.

PlataformaPaqueteVersiones vulnerablesCorregida en
Paquete de npm next >= 13.0.0, < 15.5.21, >= 16.0.0, < 16.2.11 15.5.21, 16.2.11

Referencias

Puntuación CVSS -
Vector CVSS
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Debilidad (CWE)
CWE-201
Plataforma
npm
Paquete
next
Publicada
22.07.2026
Actualizado
11.10.2026 10:22

Fuentes y licencias

OSV / GitHub Advisory Database - GHSA-955p-x3mx-jcvp - CC BY 4.0

Historial de vulnerabilidades: next

Todas las vulnerabilidades publicadas de este paquete (Paquete de npm), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.

Todas (73) en el archivo
Entradas en total
73
Primera → última
12.2017 10.2026
Sin corrección
0
Explotada en ataques
0

Distribución por gravedad

  • Crítica 5
  • Alta 27
  • Media 32
  • Baja 9

Divulgaciones por año

Gravedad:
  1. Next.js has Server-Side Request Forgery in Image Optimization
    Alta · 6.5 CVE-2026-94483 >= 16.0.0, < 16.3.8 16.3.8
  2. Next.js: Remote Code Execution in next/og ImageResponse
    Crítica ghsa-vcvr-r3jv-pc5j >= 16.2.0, < 16.3.6 16.3.6
  3. Next.js: Unauthenticated Remote Code Execution in Image Optimization API when AVIF files are used
    Crítica ghsa-2xp9-vwfh-vxw4 >= 10.0.0, < 15.5.24, >= 16.0.0, < 16.3.3 15.5.24, 16.3.3
  4. Next.js: Unauthenticated Remote Code Execution on windows-hosted servers
    Crítica · 9.0 CVE-2026-75604 >= 13.4.0, < 15.5.24, >= 16.0.0, < 16.3.3 15.5.24, 16.3.3
  5. Next.js: Server-Side Request Forgery in Server Actions on custom servers
    Alta CVE-2026-64649 >= 14.1.1, < 15.5.21, >= 16.0.0, < 16.2.11 15.5.21, 16.2.11
  6. Next.js: Server-Side Request Forgery in rewrites via attacker-controlled destination hostname
    Alta CVE-2026-64645 >= 12.0.0, < 15.5.21, >= 16.0.0, < 16.2.11 15.5.21, 16.2.11
  7. Next.js: Unauthenticated disclosure of internal Server Function endpoints esta entrada
    Media CVE-2026-64643 >= 13.0.0, < 15.5.21, >= 16.0.0, < 16.2.11 15.5.21, 16.2.11
  8. Next.js: Middleware / Proxy bypass in App Router applications using Turbopack and single locale
    Alta CVE-2026-64642 >= 16.0.0, < 16.2.11 16.2.11
  9. Next.js: Denial of Service in App Router using Server Actions
    Alta CVE-2026-64641 >= 13.0.0, < 15.5.21, >= 16.0.0, < 16.2.11 15.5.21, 16.2.11
  10. Next.js has a Middleware / Proxy bypass in App Router applications via segment-prefetch routes - Incomplete Fix Follow-Up
    Alta · 7.5 CVE-2026-45109 >= 15.2.0, < 15.5.18, >= 16.0.0, < 16.2.6 15.5.18, 16.2.6
  11. Next.js vulnerable to Denial of Service via connection exhaustion in applications using Cache Components
    Alta · 7.5 CVE-2026-44579 >= 15.0.0, < 15.5.16, >= 16.0.0, < 16.2.5 15.5.16, 16.2.5
  12. Next.js vulnerable to server-side request forgery in applications using WebSocket upgrades
    Alta · 8.6 CVE-2026-44578 >= 13.4.13, < 15.5.16, >= 16.0.0, < 16.2.5 15.5.16, 16.2.5
  13. Next.js has a Middleware / Proxy bypass in App Router applications via segment-prefetch routes
    Alta · 7.5 CVE-2026-44575 >= 15.2.0, < 15.5.16, >= 16.0.0, < 16.2.5 15.5.16, 16.2.5
  14. Next.js has a Middleware / Proxy bypass through dynamic route parameter injection
    Alta · 8.1 CVE-2026-44574 >= 15.4.0, < 15.5.16, >= 16.0.0, < 16.2.5 15.5.16, 16.2.5
  15. Next.js has a Middleware / Proxy bypass in Pages Router applications using i18n
    Alta · 7.5 CVE-2026-44573 >= 12.2.0, < 15.5.16, >= 16.0.0, < 16.2.5 15.5.16, 16.2.5
  16. Next.js Vulnerable to Denial of Service with Server Components
    Alta · 7.5 ghsa-8h8q-6873-q5fj >= 13.0.0, < 15.5.16, >= 16.0.0, < 16.2.5 15.5.16, 16.2.5
  17. Next.js has a Denial of Service with Server Components
    Alta · 7.5 ghsa-q4gf-8mx6-v5v3 >= 13.0.0, < 15.5.15, >= 16.0.0-beta.0, < 16.2.3 15.5.15, 16.2.3
  18. Next.js HTTP request deserialization can lead to DoS when using insecure React Server Components
    Alta · 7.5 ghsa-h25m-26qc-wcjf >= 13.0.0, < 15.0.8, >= 15.1.1-canary.0, < 15.1.12, >= 15.2.0-canary.0, < 15.2.9, >= 15.3.0-canary.0, < 15.3.9, >= 15.4.0-canary.0, < 15.4.11, >= 15.5.1-canary.0, < 15.5.10, >= 15.6.0-canary.0, < 15.6.0-canary.61, >= 16.0.0-beta.0, < 16.0.11, >= 16.1.0-canary.0, < 16.1.5 15.0.8, 15.1.12, 15.2.9, 15.3.9, 15.4.11, 15.5.10, 15.6.0-canary.61, 16.0.11, 16.1.5
  19. Next has a Denial of Service with Server Components - Incomplete Fix Follow-Up
    Alta · 7.5 ghsa-5j59-xgg2-r9c4 >= 13.3.1-canary.0, < 14.2.35, >= 15.0.6, < 15.0.7, >= 15.1.10, < 15.1.11, >= 15.2.7, < 15.2.8, >= 15.3.7, < 15.3.8, >= 15.4.9, < 15.4.10, >= 15.5.8, < 15.5.9, >= 15.6.0-canary.59, < 15.6.0-canary.60, >= 16.0.9, < 16.0.10, >= 16.1.0-canary.17, < 16.1.0-canary.19 14.2.35, 15.0.7, 15.1.11, 15.2.8, 15.3.8, 15.4.10, 15.5.9, 15.6.0-canary.60, 16.0.10, 16.1.0-canary.19
  20. Next Vulnerable to Denial of Service with Server Components
    Alta · 7.5 ghsa-mwv6-3258-q52c >= 13.3.0, < 14.2.34, >= 15.0.0-canary.0, < 15.0.6, >= 15.1.1-canary.0, < 15.1.10, >= 15.2.0-canary.0, < 15.2.7, >= 15.3.0-canary.0, < 15.3.7, >= 15.4.0-canary.0, < 15.4.9, >= 15.5.1-canary.0, < 15.5.8, >= 15.6.0-canary.0, < 15.6.0-canary.59, >= 16.0.0-beta.0, < 16.0.9, >= 16.1.0-canary.0, < 16.1.0-canary.17 14.2.34, 15.0.6, 15.1.10, 15.2.7, 15.3.7, 15.4.9, 15.5.8, 15.6.0-canary.59, 16.0.9, 16.1.0-canary.17
  21. Next.js is vulnerable to RCE in React flight protocol
    Crítica · 10.0 ghsa-9qr9-h5gf-34mp >= 14.3.0-canary.77, < 15.0.5, >= 15.1.0-canary.0, < 15.1.9, >= 15.2.0-canary.0, < 15.2.6, >= 15.3.0-canary.0, < 15.3.6, >= 15.4.0-canary.0, < 15.4.8, >= 15.5.0-canary.0, < 15.5.7, >= 16.0.0-canary.0, < 16.0.7 15.0.5, 15.1.9, 15.2.6, 15.3.6, 15.4.8, 15.5.7, 16.0.7
  22. Next.JS vulnerability can lead to DoS via cache poisoning
    Alta · 7.5 CVE-2025-49826 >= 15.0.4-canary.51, < 15.1.8 15.1.8
  23. Authorization Bypass in Next.js Middleware
    Crítica · 9.1 CVE-2025-29927 >= 13.0.0, < 13.5.9, >= 14.0.0, < 14.2.25, >= 15.0.0, < 15.2.3, >= 12.0.0, < 12.3.5 13.5.9, 14.2.25, 15.2.3, 12.3.5
  24. Next.js authorization bypass vulnerability
    Alta · 7.5 CVE-2024-51479 >= 9.5.5, < 14.2.15 14.2.15
  25. Next.js Cache Poisoning
    Alta · 7.5 CVE-2024-46982 >= 13.5.1, < 13.5.7, >= 14.0.0, < 14.2.10 13.5.7, 14.2.10
  26. Next.js Denial of Service (DoS) condition
    Alta · 7.5 CVE-2024-39693 >= 13.3.1, < 13.5.0 13.5.0
  27. Next.js Server-Side Request Forgery in Server Actions
    Alta · 7.5 CVE-2024-34351 >= 13.4.0, < 14.1.1 14.1.1
  28. Next.js Vulnerable to HTTP Request Smuggling
    Alta · 7.5 CVE-2024-34350 >= 13.4.0, < 13.5.1 13.5.1
  29. Unexpected server crash in Next.js.
    Alta · 7.5 CVE-2021-43803 >= 12.0.0, < 12.0.5, >= 0.9.9, < 11.1.3 12.0.5, 11.1.3
  30. XSS in Image Optimization API for Next.js
    Alta · 7.5 CVE-2021-39178 >= 10.0.0, < 11.1.1 11.1.1
  31. Remote Code Execution in next
    Alta ghsa-5vj8-3v2h-h38v >= 0.9.9, < 5.1.0 5.1.0
  32. Directory traversal vulnerability in Next.js
    Alta · 7.5 CVE-2018-6184 >= 1.0.0, < 4.2.3 4.2.3
  33. Next.js Directory Traversal Vulnerability
    Alta · 7.5 CVE-2017-16877 >= 1.0.0, < 2.4.1 2.4.1

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