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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Shopify React-Router
cpe:2.3:a:shopify:react-router:*:*:*:*:*:node.js:*:*
|
7.11.0
|
7.18.0
|
References 5
https://github.com/remix-run/react-router/security/advisories/GHSA-h8fp-f39c-q6…
https://github.com/remix-run/react-router/security/advisories/GHSA-h8fp-f39c-q6mh
https://github.com/remix-run/react-router/pull/15177
https://github.com/remix-run/react-router/pull/15177
https://github.com/remix-run/react-router/commit/ce596e823f0d7b883a433af1d5a839…
https://github.com/remix-run/react-router/commit/ce596e823f0d7b883a433af1d5a839a8b9fe0242
https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v7180
https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v7180
https://github.com/remix-run/react-router/releases/tag/react-router@7.18.0
https://github.com/remix-run/react-router/releases/tag/react-router@7.18.0