SECpocs

Next.js React Server Components RCE Exploit Exploits CVE-2025...

Exploit for Server-Side Request Forgery in Vercel Next.Js

╔═══════════════════════════════════════════════════════════...

CVE-2026-44575

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 or proxy-based checks for authorization can allow unauthorized access through transport-specific route variants used for segment...

CVE-2026-44581

CVE-2026-44581 details a stored XSS in Next.js App Router apps relying on CSP nonces when deployed behind shared caches. Affected versions are 13.4.0–before 15.5.16 and 16.2.5; malformed nonce values derived from request headers could be reflected into rendered HTML, enabling cache-poisoning and ...

CVE-2026-44580 Next.js: Cross-site scripting in beforeInteractive scripts with untrusted input

Next.js is a React framework for building full-stack web applications. From 13.0.0 to before 15.5.16 and 16.2.5, applications that use beforeInteractive scripts together with untrusted content can be vulnerable to cross-site scripting. In affected versions, serialized script content was not escap...

CVE-2026-44579

Next.js vulnerability CVE-2026-44579 affects Next.js releases prior to 15.5.16 and 16.2.5 where Partial Prerendering via Cache Components can cause a connection-exhaustion DoS through crafted POST requests to a server action. A malicious request may trigger a request-body handling deadlock, leavi...

CVE-2026-44574

Next.js is a React framework for building full-stack web applications. From 15.4.0 to before 15.5.16 and 16.2.5, applications that rely on middleware to protect dynamic routes can be vulnerable to authorization bypass. In affected deployments, specially crafted query parameters can alter the...

CVE-2026-44573

CVE-2026-44573 affects Next.js (Pages Router with i18n). From 12.2.0 up to but not including 15.5.16 and 16.2.5, middleware/proxy-based authorization can be bypassed for locale-less /_next/data//.json requests, allowing retrieval of SSR JSON for protected pages without authorization checks. The u...

CVE-2026-44573

Next.js is a React framework for building full-stack web applications. From 12.2.0 to before 15.5.16 and 16.2.5, Applications using the Pages Router with i18n configured and middleware/proxy-based authorization can allow unauthorized access to protected page data through locale-less...

CVE-2026-44572

Summary of CVE-2026-44572 (Next.js): Affects Next.js versions 12.2.0 to just before 15.5.16 and 16.2.5. An external client could send the x-nextjs-data header on a normal request to a path handled by middleware that returns a redirect. The middleware could treat this as a data request and replace...

CVE-2026-44572 Next.js: Middleware / Proxy redirects can be cache-poisoned

Next.js is a React framework for building full-stack web applications. From 12.2.0 to before 15.5.16 and 16.2.5, an external client could send a x-nextjs-data header on a normal request to a path handled by middleware that returns a redirect. When that happened, the middleware/proxy could treat t...

Next.js 安全漏洞

Next.js is a React framework open source by Vercel. There were security vulnerabilities in versions of Next.js from 12.2.0 to 15.5.16, and also in version 16.2.5. These vulnerabilities stemmed from the ability for an external client to send the x-nextjs-data header on normal requests processed by...

Next.js's Middleware / Proxy redirects can be cache-poisoned

Impact Next.js uses the x-nextjs-data request header for internal data requests. On affected versions, an external client could send this header on a normal request to a path handled by middleware that returns a redirect. When that happened, the middleware/proxy could treat the request as a data...

Next.js vulnerable to cache poisoning in React Server Component responses

Impact Applications using React Server Components can be vulnerable to cache poisoning when shared caches do not correctly partition response variants. Under affected conditions, an attacker can cause an RSC response to be served from the original URL and poison shared cache entries so later...

GHSA-492V-C6PP-MQQV Next.js has a Middleware / Proxy bypass through dynamic route parameter injection

Impact Applications that rely on middleware to protect dynamic routes can be vulnerable to authorization bypass. In affected deployments, specially crafted query parameters can alter the dynamic route value seen by the page while leaving the visible path unchanged, which can allow protected conte...

mcp-data-vis vulnerable to denial of service via unsanitized `select` key lookup on `Object.prototype` with `precompile: true`

Summary icu-minify's runtime formatter resolves select branches by looking up the runtime value as a plain property on a prototype-bearing object. When the value coerces to a key that exists on Object.prototype e.g. toString, proto, constructor, hasOwnProperty, valueOf, the lookup returns a truth...

CVE-2026-7643 ChatGPTNextWeb NextChat API Endpoint Next.js cross-domain policy

A flaw has been found in ChatGPTNextWeb NextChat up to 2.16.1. This impacts an unknown function of the file Next.js of the component API Endpoint. Executing a manipulation can lead to permissive cross-domain policy with untrusted domains. The attack may be launched remotely. The exploit has been...

Exploit for Deserialization of Untrusted Data in Facebook React

R2SAE - React2Shell Auto-Exploit A Firefox extension...

Exploit for Deserialization of Untrusted Data in Facebook React

React2Shell CVE-2025-55182 POC High Fidelity Detection & Expl...

Postiz App has a High-Severity SSRF Vulnerability via Next.js

Impact A successful SSRF attack allows an attacker to: - Bypass firewalls to scan and interact with internal network services/ports. - Access sensitive cloud metadata services e.g., AWS IMDS 169.254.169.254 to potentially leak instance credentials. - Pivot into the internal network environment...