CVE-2026-53667

medium

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/security/advisories/GHSA-h8fp-f39c-q6mh

https://github.com/remix-run/react-router/releases/tag/[email protected]

https://github.com/remix-run/react-router/pull/15177

https://github.com/remix-run/react-router/commit/ce596e823f0d7b883a433af1d5a839a8b9fe0242

https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v7180

Details

Source: Mitre, NVD

Published: 2026-07-27

Updated: 2026-08-03

Risk Information

CVSS v2

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Severity: Medium

EPSS

EPSS: 0.00354