CVE-2026-53667
Medium · 6.9CVSS
6.9
EPSS
0.4%
Published
Jul 27, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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