CVE-2025-61686

React Router is a router for React. In @react-router/node versions 7.0.0 through 7.9.3, @remix-run/deno prior to version 2.17.2, and @remix-run/node prior to version 2.17.2, if createFileSessionStorage is being used from @react-router/node or @remix-run/node/@remix-run/deno in Remix v2 with an...

CVE-2025-61686

CVE-2025-61686 affects React Router’s file session storage path handling when using createFileSessionStorage() with an unsigned cookie in @react-router/node (and Remix variants). The issue allows a path-traversal-like scenario where a server process with sufficient permissions may attempt to read...

CVE-2025-61686 React Router has Path Traversal in File Session Storage

React Router is a router for React. In @react-router/node versions 7.0.0 through 7.9.3, @remix-run/deno prior to version 2.17.2, and @remix-run/node prior to version 2.17.2, if createFileSessionStorage is being used from @react-router/node or @remix-run/node/@remix-run/deno in Remix v2 with an...

CVE-2025-61686 React Router has Path Traversal in File Session Storage

React Router is a router for React. In @react-router/node versions 7.0.0 through 7.9.3, @remix-run/deno prior to version 2.17.2, and @remix-run/node prior to version 2.17.2, if createFileSessionStorage is being used from @react-router/node or @remix-run/node/@remix-run/deno in Remix v2 with an...

EUVD-2026-1468

React Router is a router for React. In @react-router/node versions 7.0.0 through 7.9.3, @remix-run/deno prior to version 2.17.2, and @remix-run/node prior to version 2.17.2, if createFileSessionStorage is being used from @react-router/node or @remix-run/node/@remix-run/deno in Remix v2 with an...

CVE-2025-61686 React Router has Path Traversal in File Session Storage

React Router is a router for React. In @react-router/node versions 7.0.0 through 7.9.3, @remix-run/deno prior to version 2.17.2, and @remix-run/node prior to version 2.17.2, if createFileSessionStorage is being used from @react-router/node or @remix-run/node/@remix-run/deno in Remix v2 with an...

React Router has Path Traversal in File Session Storage

If applications use createFileSessionStorage from @react-router/node or @remix-run/node/@remix-run/deno in Remix v2 with an unsigned cookie, it is possible for an attacker to cause the session to try to read/write from a location outside the specified session file directory. The success of the...

Directory Traversal

Overview @remix-run/deno is a Deno platform abstractions for Remix Affected versions of this package are vulnerable to Directory Traversal via the createFileSessionStorage function. An attacker can access or modify files outside the intended session file directory by crafting a malicious session...

GHSA-9583-H5HC-X8CW React Router has Path Traversal in File Session Storage

If applications use createFileSessionStorage from @react-router/node or @remix-run/node/@remix-run/deno in Remix v2 with an unsigned cookie, it is possible for an attacker to cause the session to try to read/write from a location outside the specified session file directory. The success of the...