CVE-2025-59057-PoC

A XSS vulnerability exists in in React Router's meta/ APIs in Framework Mode when generating script:ld+json tags which could allow arbitrary JavaScript execution during SSR if untrusted content is used to generate the tag...

Pre-render-data-spoofing-on-React-Router-framework-mode-CVE-2025-43865

Welcome to React Router! A modern, production-ready template for building full-stack React applications using React Router. Features 🚀 Server-side rendering ⚡️ Hot Module Replacement HMR 📦 Asset bundling and optimization 🔄 Data loading and mutations 🔒 TypeScript by default 🎉 TailwindCSS for stylin...

Security Bulletin:React Router SSR Error Handling Vulnerability in Versions 6.4.0 to 7.17.0

Summary React Router is a router for React. In versions 6.4.0 through 7.17.0, if application code was written in a way that allows attacker-supplied input to overwrite certain aspects of errors caught by the SSR process, then it was possible for an attacker to trigger unexpected constructor...

React Router Vulnerable to Cross-Site Scripting (XSS) via Redirect Location Mishandling (CVE-2026-22029)

React Router is a router for React. In @remix-run/router version prior to 1.23.2 and react-router 7.0.0 through 7.11.0, React Router and Remix v1/v2 SPA open navigation redirects originating from loaders or actions in Framework Mode, Data Mode, or the unstable RSC modes can result in unsafe URLs...

Security Bulletin: SPSS Collaboration and Deployment Services is affected by multiple vulnerabilities in React Router

Summary SPSS Collaboration and Deployment Services is affected by multiple vulnerabilities in React Router. This has been addressed in the remediation section. Vulnerability Details CVEID:CVE-2026-33244 DESCRIPTION: React Router is a router for React. In versions 7.5.1 through 7.13.1, when using...

react-router: React Router: Remote Code Execution via prototype pollution in Framework Mode

A flaw was found in React Router when operating in Framework Mode. A remote attacker could exploit an existing prototype pollution vulnerability within the application code. This could lead to unauthorized remote code execution RCE on the server through a two-step attack involving external...

Linux Distros Unpatched Vulnerability : CVE-2026-42211

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - React Router is a router for React. In versions 7.0.0 through 7.14.1, when using Framework Mode, a combination of steps could potentially allow unauthorized...

CVE-2026-53666

A flaw was found in React Router. If an application is configured to allow attacker-supplied input to modify errors during server-side rendering SSR, a remote attacker could trigger unexpected code execution on the client. This execution could lead to an outbound network request, potentially...

Linux Distros Unpatched Vulnerability : CVE-2026-53666

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - React Router is a router for React. In versions 6.4.0 through 7.17.0, if application code was written in a way that allows attacker-supplied input to overwrite...

CVE-2026-53666

React Router is a router for React. In versions 6.4.0 through 7.17.0, if application code was written in a way that allows attacker-supplied input to overwrite certain aspects of errors caught by the SSR process, then it was possible for an attacker to trigger unexpected constructor execution on...

CVE-2026-53666

React Router is a router for React. In versions 6.4.0 through 7.17.0, if application code was written in a way that allows attacker-supplied input to overwrite certain aspects of errors caught by the SSR process, then it was possible for an attacker to trigger unexpected constructor execution on...

CVE-2026-53666

CVE-2026-53666 affects React Router versions 6.4.0 through 7.17.0 where attacker-supplied input could overwrite parts of errors captured during SSR, enabling arbitrary constructor execution on the client and triggering outbound network requests. This requires specific, unlikely application-layer ...

CVE-2026-53666

React Router is a router for React. In versions 6.4.0 through 7.17.0, if application code was written in a way that allows attacker-supplied input to overwrite certain aspects of errors caught by the SSR process, then it was possible for an attacker to trigger unexpected constructor execution on...

CVE-2026-53666 React Router: Arbitrary Constructor Injection via deserializeErrors() in React Router SSR Hydration

React Router is a router for React. In versions 6.4.0 through 7.17.0, if application code was written in a way that allows attacker-supplied input to overwrite certain aspects of errors caught by the SSR process, then it was possible for an attacker to trigger unexpected constructor execution on...

EUVD-2026-49628

React Router is a router for React. In versions 6.4.0 through 7.17.0, if application code was written in a way that allows attacker-supplied input to overwrite certain aspects of errors caught by the SSR process, then it was possible for an attacker to trigger unexpected constructor execution on...

CVE-2026-53666 React Router: Arbitrary Constructor Injection via deserializeErrors() in React Router SSR Hydration

React Router is a router for React. In versions 6.4.0 through 7.17.0, if application code was written in a way that allows attacker-supplied input to overwrite certain aspects of errors caught by the SSR process, then it was possible for an attacker to trigger unexpected constructor execution on...

CVE-2026-53666: Use of Externally-Controlled Input to Select Classes or Code

React Router is a router for React. In versions 6.4.0 through 7.17.0, if application code was written in a way that allows attacker-supplied input to overwrite certain aspects of errors caught by the SSR process, then it was possible for an attacker to trigger unexpected constructor execution on...

Inefficient Algorithmic Complexity

Overview Affected versions of this package are vulnerable to Inefficient Algorithmic Complexity through inefficient route matching in the manifest endpoint. An attacker can cause excessive server load and degrade response times by sending unauthenticated targeted requests. Note: This is only...

React Router: Unauthenticated Denial of Service via Inefficient Route Matching

This is a follow up to https://github.com/remix-run/react-router/security/advisories/GHSA-8x6r-g9mw-2r78 that covers additional reported scenarios in which the manifest endpoint could be accessed via unauthenticated targeted requests that would put heavy load on the server and slow down response...

Inefficient Algorithmic Complexity

Overview Affected versions of this package are vulnerable to Inefficient Algorithmic Complexity through inefficient route matching in the manifest endpoint. An attacker can cause excessive server load and degrade response times by sending unauthenticated targeted requests. Note: This is only...