CVE-2026-64642 Next.js: Middleware / Proxy bypass in App Router applications using Turbopack and single locale

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 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-2026-64645

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...

Server-side Request Forgery (SSRF)

Overview next is a react framework. Affected versions of this package are vulnerable to Server-side Request Forgery SSRF through createForwardedActionResponse and createRedirectRenderResult in packages/next/src/server/app-render/action-handler.ts. An attacker can make the server send a forwarded...

GHSA-4633-3J49-MH5Q Next.js: Cache confusion of response bodies for requests with bodies containing invalid UTF-8 byte sequences

Impact 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 POST's response body would then leak to unauthorized requests. Though the request itself will not be deduped. This is only an issu...

NPM: Next.js: Unbounded Server Action payload in Edge runtime

NPM: Next.js: Unbounded Server Action payload in Edge runtime vulnerability discovered by ? in WordPress Npm next versions = 13.0.0, 15.5.21...

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

Impact 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 rule's hostname suffix. For a rewrite, Next.js proxies the request to that arbitrary host and serves the response from the...

GHSA-P9J2-GV94-2WF4 Next.js: Server-Side Request Forgery in rewrites via attacker-controlled destination hostname

Impact 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 rule's hostname suffix. For a rewrite, Next.js proxies the request to that arbitrary host and serves the response from the...

GHSA-Q8WF-6R8G-63CH Next.js: Denial of Service in the Image Optimization API using SVGs

Impact 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 those images contain malicious content, they can cause CPU exhaustion in /next/image endpoints. - If you are using...

PT-2026-63561

Name of the Vulnerable Software and Affected Versions Next.js versions 13.0.0 through 15.5.20 Next.js versions 16.0.0 through 16.2.10 Description Requests targeting applications using App Router with at least one Server Action can lead to excessive memory consumption when that Server Action...

CVE-2026-62327

9Router through version 0.4.41 contains an unauthenticated information disclosure vulnerability that allows remote attackers to retrieve plaintext API keys for all connected AI provider accounts by sending a single unauthenticated request to the /api/usage/stats endpoint. Attackers can exploit th...

CVE-2026-62327 9Router 0.4.41 - Unauthenticated API Key Exposure via /api/usage/stats

9Router through version 0.4.41 contains an unauthenticated information disclosure vulnerability that allows remote attackers to retrieve plaintext API keys for all connected AI provider accounts by sending a single unauthenticated request to the /api/usage/stats endpoint. Attackers can exploit th...

CVE-2026-59801

CVE-2026-59801 affects 9Router up to version 0.4.41 and is caused by missing authentication middleware in Next.js API routes under src/app/api/providers/*. It allows unauthenticated remote interaction with provider management endpoints, enabling enumeration, creation, modification, or deletion of...

CVE-2026-59801

9Router through version 0.4.41 contains an unauthenticated access vulnerability that allows remote attackers to interact with provider management API endpoints by sending requests without any credentials due to missing authentication middleware in the Next.js API routes under...

next.js: Next.js: Denial of Service via crafted POST requests to server actions

A flaw was found in Next.js. Applications utilizing Partial Prerendering via the Cache Components feature are susceptible to connection exhaustion. A remote attacker can send crafted POST requests to a server action, triggering a request-body handling deadlock. This leaves connections open,...

next.js: Next.js: Unauthorized access to protected content via middleware bypass

A flaw was found in Next.js. App Router applications that use middleware or proxy-based authorization checks are vulnerable to unauthorized access. A remote attacker can exploit this by crafting specific .rsc and segment-prefetch URLs, which bypass the intended middleware rules. This allows acces...

Exploit for Deserialization of Untrusted Data in Facebook React

CVE-2025-55182 — React2Shell Critical pre-authentication Remo...

Linux Distros Unpatched Vulnerability : CVE-2026-44575

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Next.js is a React framework for building full-stack web applications. From 15.2.0 to before 15.5.16 and 16.2.5, App Router applications that rely on middleware...

Linux Distros Unpatched Vulnerability : CVE-2026-44577

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Next.js is a React framework for building full-stack web applications. From 10.0.0 to before 15.5.16 and 16.2.5, when self-hosting Next.js with the default imag...

Linux Distros Unpatched Vulnerability : CVE-2026-44582

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Next.js is a React framework for building full-stack web applications. From 13.4.6 to before 15.5.16 and 16.2.5, React Server Component responses can be...