CVEvulnerability

CVE-2026-42211

8.1 HIGH Published 2026-06-02 Modified 2026-07-21 Official page ↗
Status
Analyzed
Published
2026-06-02
Last modified
2026-07-21
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.1 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-502

Description

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 vulnerability, which can then be leveraged in a 2-step attack where the second step triggers unauthorized RCE on the remote server. This does not impact applications using Declarative Mode (`<BrowserRouter>`) or Data Mode (`createBrowserRouter/<RouterProvider>`). This is patched in version 7.14.2.

Affected configurations

• shopify react-router (>= 7.0.0 < 7.14.2)

Related

Weakness · CWE (1)

  • CWE-502 Deserialization of Untrusted Data weakness

References