GHSA-49rj-9fvp-4h2h
React Router's vendored turbo-stream v2 allows arbitrary constructor invocation via TYPE_ERROR deserialization leading to Unauth RCE
En bref
- Publiée
- Mise à jour
- CVE
- CVE-2026-42211
- CVSS_V3
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
When using React Router v7 in [Framework Mode](https://reactrouter.com/start/modes#framework), 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](https://reactrouter.com/start/modes#declarative) (`<BrowserRouter>`) or [Data Mode](https://reactrouter.com/start/modes#data) (`createBrowserRouter`/`<RouterProvider>`).
Paquets affectés
| Paquet | Versions |
|---|---|
| npm · react-router | introduced 7.0.0, fixed 7.14.2 |
Références
- https://github.com/remix-run/react-router/security/advisories/GHSA-49rj-9fvp-4h2h WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-42211 ADVISORY
- https://github.com/remix-run/react-router PACKAGE
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |