Open redirect in React Router - CVE-2026-53669
Published: July 22, 2026
Vulnerability identifier: #VU139181
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-53669
CWE-ID: CWE-601
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Remix
Affected software:
React Router
React Router
Detailed vulnerability description
The vulnerability allows a remote attacker to redirect users to an external site.
The vulnerability exists due to open redirect in navigation mechanisms when processing attacker-supplied paths. A remote attacker can supply a crafted path to trigger an unexpected external navigation to redirect users to an external site.
How to mitigate CVE-2026-53669
Install security update from vendor's website.