CVE-2026-53669: React Router: Open redirect via backslash in <Link> and useNavigate (CVE-2025-68470 bypass)

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-27 · updated 2026-10-24
Weakness: CWE-601

Description

React Router is a router for React. Versions 6.0.0 through 7.17.0 are vulnerable to Open Redirtect through use of backslashes in <Link> and useNavigate. This issue is a follow up to CVE-2025-68470 and has been fixed in version 7.18.0.

Affected products

remix-run react-router: from 6.0.0 before 7.18.0 — fixed in 7.18.0

How to fix

Upgrade to a fixed version: remix-run react-router 7.18.0. Check the vendor advisory for mitigations.

References

http://github.com/remix-run/react-router/pull/15176
https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v7180
https://github.com/remix-run/react-router/pull/15176
https://github.com/remix-run/react-router/releases/tag/react-router@7.18.0
https://github.com/remix-run/react-router/security/advisories/GHSA-wrjc-x8rr-h8h6

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