GHSA-49rj-9fvp-4h2h React Router's vendored turbo-stream v2 allows arbitrary constructor invocation via TYPE_ERROR deserialization leading to Unauth RCE

• npm react-router: >= 7.0.0, < 7.14.2 → fixed in 7.14.2

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 which the second step can trigger unauthorized RCE on the remote server. > [!NOTE] > This does not impact your React Router application if you are using Declarative Mode (``) or Data Mode (`createBrowserRouter`/``).