Open Redirect Affecting react-router package, versions >=6.7.0 <6.30.4>=7.0.0 <7.14.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-REACTROUTER-17138887
- published3 Jun 2026
- disclosed2 Jun 2026
- creditUnknown
Introduced: 2 Jun 2026
CVE-2026-40181 (opens in a new tab)How to fix?
Upgrade react-router to version 6.30.4, 7.14.1 or higher.
Overview
Affected versions of this package are vulnerable to Open Redirect when certain URLs with path values starting with // are processed. An attacker can redirect users to external domains by supplying specially crafted protocol-relative URLs.
Note:
Users that utilise Declarative Mode (<BrowserRouter>) are not affected by this issue.