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CVE-2025-31137 Remix and React Router allow URL manipulation via Host / X-Forwarded-Host headers

šŸ—“ļøĀ 01 Apr 2025Ā 18:20:32Reported byĀ GoogleTypeĀ 
osv
Ā osv
šŸ”—Ā osv.devšŸ‘Ā 6Ā Views

URL spoofing via Host or X-Forwarded-Host headers in Remix 2 and React Router 7 with Express; fixed in remix 2.16.3 and react router 7.4.1.

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10 Apr 2026 05:25Current
6.9Medium risk
Vulners AI Score6.9
CVSS 37.5
EPSS0.00095
6