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.
Severity (CVSS)
| Base score | 6.9 |
|---|---|
| Severity | Medium |
| Version | CVSS 3.1 |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N |
| Provided by | CNA |
Weaknesses
- CWE-79 — CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected products
| Vendor | Product | Versions |
|---|---|---|
| remix-run | react-router | >= 7.11.0, < 7.18.0 |
References
- https://github.com/remix-run/react-router/security/advisories/GHSA-h8fp-f39c-q6mh (x_refsource_CONFIRM)
- https://github.com/remix-run/react-router/pull/15177 (x_refsource_MISC)
- https://github.com/remix-run/react-router/commit/ce596e823f0d7b883a433af1d5a839a8b9fe0242 (x_refsource_MISC)
- https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v7180 (x_refsource_MISC)
- https://github.com/remix-run/react-router/releases/tag/react-router@7.18.0 (x_refsource_MISC)
Generated from the official CVE List on 28 Jul 2026 07:03 UTC.