CVE-2025-31137: Remix and React Router allow URL manipulation via Host / X-Forwarded-Host headers
remix-run · react-router
Affected: remix-run react-router · Exploitation: possible (1 to 10%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 68% of scored CVEs
DescriptionCVE.org
React Router is a multi-strategy router for React bridging the gap from React 18 to React 19. There is a vulnerability in Remix/React Router that affects all Remix 2 and React Router 7 consumers using the Express adapter. Basically, this vulnerability allows anyone to spoof the URL used in an incoming Request by putting a URL pathname in the port section of a URL that is part of a Host or X-Forwarded-Host header sent to a Remix/React Router request handler. This issue has been patched and released in Remix 2.16.3 and React Router 7.4.1.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- remix-run · react-router>= 7.0.0, < 7.4.1; >= 2.11.1, < 2.16.3
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Possible (1 to 10%). EPSS between 1% and 10%.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- remix-run
- Published
- April 2025
CoverageNo articles yet
No CyberSIXT article names CVE-2025-31137 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.