CVE CVE-2026-53667

CVE-2026-53667

React

Severity: MEDIUM
CVSS: 6.9CVSS
Published: 2026-07-27
Last modified: 2026-07-27
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N
CWE: CWE-79

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.

References

https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v7180
https://github.com/remix-run/react-router/commit/ce596e823f0d7b883a433af1d5a839a8b9fe0242
https://github.com/remix-run/react-router/pull/15177
https://github.com/remix-run/react-router/releases/tag/react-router@7.18.0
https://github.com/remix-run/react-router/security/advisories/GHSA-h8fp-f39c-q6mh

Summary

Description

References