Vulnerability Description
React Router is a router for React. In versions 7.11.0 through 7.17.0, the RSCErrorHandler is missing protocol validation, allowing for redirects from untrusted sources. This issue is a follow up to CVE-2026-53667, and only affects consuming applications if they are using the unstable RSC APIs. This issue has been fixed in version 7.18.0.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Shopify | React-Router | >= 7.11.0, < 7.18.0 |
Related Weaknesses (CWE)
References
- https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v7180Release Notes
- https://github.com/remix-run/react-router/commit/ce596e823f0d7b883a433af1d5a839aPatch
- https://github.com/remix-run/react-router/pull/15177Issue TrackingPatch
- https://github.com/remix-run/react-router/releases/tag/[email protected]Release Notes
- https://github.com/remix-run/react-router/security/advisories/GHSA-h8fp-f39c-q6mThird Party Advisory
FAQ
What is CVE-2026-53667?
CVE-2026-53667 is a vulnerability with a CVSS score of 6.9 (MEDIUM). React Router is a router for React. In versions 7.11.0 through 7.17.0, the RSCErrorHandler is missing protocol validation, allowing for redirects from untrusted sources. This issue is a follow up to C...
How severe is CVE-2026-53667?
CVE-2026-53667 has been rated MEDIUM with a CVSS base score of 6.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-53667?
Check the references section above for vendor advisories and patch information. Affected products include: Shopify React-Router.