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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-53666 Detail

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v7180 GitHub, Inc.
https://github.com/remix-run/react-router/commit/9d22943fd46c8ae4b08236425fa3549e10e9ad1a GitHub, Inc.
https://github.com/remix-run/react-router/pull/15175 GitHub, Inc.
https://github.com/remix-run/react-router/releases/tag/[email protected] GitHub, Inc.
https://github.com/remix-run/react-router/security/advisories/GHSA-337j-9hxr-rhxg GitHub, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-470 Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') GitHub, Inc.  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-53666
NVD Published Date:
07/27/2026
NVD Last Modified:
07/27/2026
Source:
GitHub, Inc.