GHSA-F22V-GFQF-P8F3 React Router has stored XSS via unescaped Location header in prerendered redirect HTML

When using React Router v7 Framework Mode with Pre-rendering enabled, an improper neutralization of the HTTP Location header value can permit Cross-Site Scripting XSS in statically generated HTML files if the redirect location comes from an untrusted source. !NOTE This does not impact your React...

SUSE CVE-2026-33244

React Router is a router for React. In versions 7.5.1 through 7.13.1, when using Framework Mode with pre-rendering enabled, improper neutralization of the HTTP Location header value can permit Cross-Site Scripting XSS in the statically generated HTML files if the redirect location comes from an...

PT-2026-46085

When using React Router v7 in Framework Mode, there exists a combination of steps that could potentially allow unauthorized RCE through external requests. This first requires the application code to have an existing prototype pollution vulnerability. This can be leveraged into a 2-step attack in...

PT-2026-46095

When using React Router v7 Framework Mode with Pre-rendering enabled, an improper neutralization of the HTTP Location header value can permit Cross-Site Scripting XSS in statically generated HTML files if the redirect location comes from an untrusted source. !NOTE This does not impact your React...

Deserialization of Untrusted Data

Overview Affected versions of this package are vulnerable to Deserialization of Untrusted Data via the turbo-stream component in in Framework Mode. An attacker can execute arbitrary code on the remote server by sending specially crafted external requests that exploit an existing prototype polluti...

CVE-2026-42342

React Router is a router for React. In versions 7.0.0 through 7.14.x of react-router and versions 2.10.0 through 2.17.4 of @remix-run/server-runtime, certain crafted requests can consume disproportionate server resources via unbounded path expansion in the manifest endpoint, resulting in response...

CVE-2026-42211

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 remote code execution RCE through external requests. This attack requires the application code to have an existing prototype pollution...

Cross-site Scripting (XSS)

Overview @react-router/dev is a Dev tools and CLI for React Router Affected versions of this package are vulnerable to Cross-site Scripting XSS due to the improper neutralization of the HTTP Location header value in redirect HTML prerendering when using Framework Mode. An attacker can execute...

CVE-2026-42342

CVE-2026-42342 affects React Router and Remix Server Runtime: versions 7.0.0–7.14.x of react-router and 2.10.0–2.17.4 of @remix-run/server-runtime are vulnerable to DoS via unbounded path expansion on the __manifest endpoint, causing high resource usage and potential unavailability for Framework ...

CVE-2026-42342 React Router vulnerable to DoS via unbounded path expansion in __manifest endpoint

React Router is a router for React. In versions 7.0.0 through 7.14.x of react-router and versions 2.10.0 through 2.17.4 of @remix-run/server-runtime, certain crafted requests can consume disproportionate server resources via unbounded path expansion in the manifest endpoint, resulting in response...

CVE-2026-42342 React Router vulnerable to DoS via unbounded path expansion in __manifest endpoint

React Router is a router for React. In versions 7.0.0 through 7.14.x of react-router and versions 2.10.0 through 2.17.4 of @remix-run/server-runtime, certain crafted requests can consume disproportionate server resources via unbounded path expansion in the manifest endpoint, resulting in response...

CVE-2026-42211 React Router's vendored turbo-stream v2 allows arbitrary constructor invocation via TYPE_ERROR deserialization leading to Unauth RCE

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 remote code execution RCE through external requests. This attack requires the application code to have an existing prototype pollution...

CVE-2026-42211

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 remote code execution RCE through external requests. This attack requires the application code to have an existing prototype pollution...

CVE-2026-42211

CVE-2026-42211 affects React Router versions 7.0.0–7.14.1 when used in Framework Mode. A combination of steps could enable a prototype pollution condition that an attacker could leverage in a two-step process to trigger unauthorized remote code execution on the remote server. The issue does not i...

CVE-2026-42211 React Router's vendored turbo-stream v2 allows arbitrary constructor invocation via TYPE_ERROR deserialization leading to Unauth RCE

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 remote code execution RCE through external requests. This attack requires the application code to have an existing prototype pollution...

CVE-2026-42211 React Router's vendored turbo-stream v2 allows arbitrary constructor invocation via TYPE_ERROR deserialization leading to Unauth RCE

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 remote code execution RCE through external requests. This attack requires the application code to have an existing prototype pollution...

CVE-2026-33244

React Router is a router for React. In versions 7.5.1 through 7.13.1, when using Framework Mode with pre-rendering enabled, improper neutralization of the HTTP Location header value can permit Cross-Site Scripting XSS in the statically generated HTML files if the redirect location comes from an...

CVE-2026-33244 React Router has stored XSS via unescaped Location header in prerendered redirect HTML

React Router is a router for React. In versions 7.5.1 through 7.13.1, when using Framework Mode with pre-rendering enabled, improper neutralization of the HTTP Location header value can permit Cross-Site Scripting XSS in the statically generated HTML files if the redirect location comes from an...

CVE-2026-33244

React Router is a router for React. In versions 7.5.1 through 7.13.1, when using Framework Mode with pre-rendering enabled, improper neutralization of the HTTP Location header value can permit Cross-Site Scripting XSS in the statically generated HTML files if the redirect location comes from an...

CVE-2026-33244

CVE-2026-33244 affects React Router in versions 7.5.1–7.13.1 when using Framework Mode with pre-rendering enabled. The issue is improper neutralization of the HTTP Location header value, allowing Cross-Site Scripting (XSS) in statically generated HTML if the redirect target comes from an untruste...