CVE-2026-64641 Next.js: Denial of Service in App Router using Server Actions

Next.js is a React framework for building full-stack web applications. In versions 13.0.0 through 15.5.20 and 16.0.0 through 16.2.10, crafted requests targeting Next.js applications using App Router with at least one Server Action can lead to excessive CPU usage blocking processing of further...

CVE-2026-64641 Next.js: Denial of Service in App Router using Server Actions

Next.js is a React framework for building full-stack web applications. In versions 13.0.0 through 15.5.20 and 16.0.0 through 16.2.10, crafted requests targeting Next.js applications using App Router with at least one Server Action can lead to excessive CPU usage blocking processing of further...

CVE-2026-64641

Next.js is a React framework for building full-stack web applications. In versions 13.0.0 through 15.5.20 and 16.0.0 through 16.2.10, crafted requests targeting Next.js applications using App Router with at least one Server Action can lead to excessive CPU usage blocking processing of further...

CVE-2026-64641

Next.js is a React framework for building full-stack web applications. In versions 13.0.0 through 15.5.20 and 16.0.0 through 16.2.10, crafted requests targeting Next.js applications using App Router with at least one Server Action can lead to excessive CPU usage blocking processing of further...

CVE-2026-64641

Next.js CVE-2026-64641 describes a denial-of-service in App Router when using at least one Server Action. Affected versions are 13.0.0–15.5.20 and 16.0.0–16.2.10; crafted requests can cause excessive CPU usage that blocks processing of further requests within the same process. The issue is fixed ...

CVE-2026-64645 Next.js: Server-Side Request Forgery in rewrites via attacker-controlled destination hostname

Next.js is a React framework for building full-stack web applications. In versions 12.0.0 through 15.5.20 and 16.0.0 through 16.2.10, a rewrites or redirects rule that builds its external destination hostname from request-controlled input can be pointed at an arbitrary hostname, regardless of the...

CVE-2026-64645 Next.js: Server-Side Request Forgery in rewrites via attacker-controlled destination hostname

Next.js is a React framework for building full-stack web applications. In versions 12.0.0 through 15.5.20 and 16.0.0 through 16.2.10, a rewrites or redirects rule that builds its external destination hostname from request-controlled input can be pointed at an arbitrary hostname, regardless of the...

CVE-2026-64645

The CVE-2026-64645 issue affects Next.js versions 12.0.0–15.5.20 and 16.0.0–16.2.10, where a rewrites() or redirects() rule may build the external destination hostname from request-controlled input. This allows an attacker to proxy a request to an arbitrary host (SSRF) or redirect users to an uni...

CVE-2026-64645

Next.js is a React framework for building full-stack web applications. In versions 12.0.0 through 15.5.20 and 16.0.0 through 16.2.10, a rewrites or redirects rule that builds its external destination hostname from request-controlled input can be pointed at an arbitrary hostname, regardless of the...

CVE-2026-64646: Allocation of Resources Without Limits or Throttling

Next.js is a React framework for building full-stack web applications. In versions 13.0.0 through 15.5.20 and 16.0.0 through 16.2.10, requests targeting Next.js applications using App Router with at least one Server Action can lead to excessive memory consumption if that Server Actions uses the...

CVE-2026-64649: Server-Side Request Forgery (SSRF)

Next.js is a React framework for building full-stack web applications. In versions 14.1.1 through 15.5.20 and 16.0.0 through 16.2.10, when a Server Action forwards or redirects a request, an attacker can cause the server to send that outbound request to a malicious host Server-Side Request Forger...

CVE-2026-64648: Use of Cache Containing Sensitive Information

Next.js is a React framework for building full-stack web applications. In versions 12.0.0 through 15.5.20 and 16.0.0 through 16.2.10, a server-side fetch with a request body may return a cached response body from a different request to the same URL but different body. Confidential data in the...

CVE-2026-64647: Improper Encoding or Escaping of Output

Next.js is a React framework for building full-stack web applications. In versions 12.0.0 through 15.5.20 and 16.0.0 through 16.2.10, a server-side fetch with a request body may return a cached response body from a different request to the same URL but different body. Confidential data in the...

CVE-2026-64645: Server-Side Request Forgery (SSRF)

Next.js is a React framework for building full-stack web applications. In versions 12.0.0 through 15.5.20 and 16.0.0 through 16.2.10, a rewrites or redirects rule that builds its external destination hostname from request-controlled input can be pointed at an arbitrary hostname, regardless of the...

CVE-2026-64644: Inefficient Algorithmic Complexity

Next.js is a React framework for building full-stack web applications. In versions 15.5.0 through 15.5.20 and 16.0.0 through 16.2.10, when self-hosting Next.js with the default image loader, the Image Optimization API can optimize remotely hosted images if configured not enabled by default. If...

CVE-2026-64643: Insertion of Sensitive Information Into Sent Data

Next.js is a React framework for building full-stack web applications. In versions 12.0.0 through 15.5.20 and 16.0.0 through 16.2.10, 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...

CVE-2026-64642: Improper Authorization

Next.js is a React framework for building full-stack web applications. In versions 16.0.0 through 16.2.10, crafted requests targeting Next.js applications using App Router built with Turbopack and a single entry in config.i18n.locales can bypass middleware/proxy based authentication. This issue h...

CVE-2026-64641: Excessive Iteration

Next.js is a React framework for building full-stack web applications. In versions 13.0.0 through 15.5.20 and 16.0.0 through 16.2.10, crafted requests targeting Next.js applications using App Router with at least one Server Action can lead to excessive CPU usage blocking processing of further...

Next.js Framework 14.1.1 < 15.5.21 / 16.x < 16.2.11 SSRF

The Next.js Framework on the remote host is affected by a server-side request forgery vulnerability: - When a Server Action forwards or redirects a request, an attacker can cause the server to send that outbound request to a malicious host Server-Side Request Forgery. This requires the attacker's...

Next.js Framework 13.x < 15.5.21 / 16.x < 16.2.11 DoS

The Next.js Framework on the remote host is affected by a denial of service vulnerability: - Crafted requests targeting Next.js applications using App Router with at least one Server Action can lead to excessive CPU usage blocking processing of further requests in the same process. CVE-2026-64641...