6.1

CVE-2026-53666

React Router: Arbitrary Constructor Injection via deserializeErrors() in React Router SSR Hydration

React Router is a router for React. In versions 6.4.0 through 7.17.0, if application code was written in a way that allows attacker-supplied input to overwrite certain aspects of errors caught by the SSR process, then it was possible for an attacker to trigger unexpected constructor execution on the client, which would in turn trigger an outbound network request. This is only possible with very specific (and unlikely) application-layer code. Note that this does not impact an application if it is using Declarative Mode. It only impacts Framework Mode and Data Mode applications that perform manual SSR/hydration. This issue has been fixed in version 7.18.0.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Shopify ≫ React-router SwPlatformnode.js Version >= 6.4.0 < 7.18.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.42% 0.341
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 6.1 2.8 2.7
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-470 Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')

The product uses external input with reflection to select which classes or code to use, but it does not sufficiently prevent the input from selecting improper classes or code.

https://github.com/remix-run/react-router/security/advisories/GHSA-337j-9hxr-rhxg
Third Party Advisory
https://github.com/remix-run/react-router/pull/15175
Patch
Issue Tracking
https://github.com/remix-run/react-router/commit/9d22943fd46c8ae4b08236425fa3549e10e9ad1a
Patch
https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v7180
Release Notes
https://github.com/remix-run/react-router/releases/tag/react-router@7.18.0
Release Notes