CVE-2026-53668: React Router XSS via open redirect in useNavigate

CVE-2026-53668 · Severity: medium · CVSS 6.9 · Published 2026-07-27

React Router is a popular library used to manage navigation and URL routing in React-based web applications. A vulnerability exists where applications using specific versions of this library may allow attackers to redirect users to malicious external websites or execute unauthorized scripts in the user's browser. This could lead to the theft of sensitive information, such as login credentials or session tokens, if a user clicks on a specially crafted link.

Quick answers

Is CVE-2026-53668 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-53668 being exploited in the wild.
How severe is CVE-2026-53668?
Medium severity, with a CVSS score of 6.9, published 27 July 2026.
Which products and versions are affected?
React-Router-Dom >= 6.30.2, <= 6.30.4, SEMVER:introduced=6.30.2,fixed=6.30.6.
Is there a fix for CVE-2026-53668?
Yes. React-Router-Dom: upgrade to 6.30.6 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-53668 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-53668?
Check whether you run React-Router-Dom at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • React-Router-Dom: upgrade to 6.30.6 or later

Technical details

A vulnerability in React Router's path normalization and navigation logic, specifically within the `useNavigate` hook and `resolvePath` functions, allows for open redirects that can be escalated to Cross-Site Scripting (XSS). The flaw stems from improper handling of double slashes and colons in navigation paths, which can be manipulated to bypass intended routing constraints. An unauthenticated remote attacker can exploit this by inducing a user to click a malicious link. If the application is configured to allow redirects based on user-supplied input, the attacker can redirect the victim to an arbitrary external domain or execute JavaScript within the context of the vulnerable application. The issue has been addressed in version 7.13.0 by improving path normalization logic.

Affected products

  • remix-run react-router >= 6.30.2, <= 6.30.4; >= 7.9.6, < 7.13.0
  • remix-run react-router-dom >= 6.30.2, <= 6.30.4

Identifiers

  • CVE-2026-53668
  • GHSA-jjmj-jmhj-qwj2

Timeline

  • 2026-01-09: other: Pull request submitted to fix double slash normalization
  • 2026-01-16: patched: Fix merged into development branch
  • 2026-07-22: advisory: GitHub Security Advisory published
  • 2026-07-27: disclosed: CVE published to NVD

References

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