GHSA-4q56-crqp-v477
First published: Tue Apr 01 2025(Updated: )
### Impact We received a report about 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. ### Patches This issue has been patched and released in Remix 2.16.3 React Router 7.4.1. ### Credits - Rachid Allam (zhero;) - Yasser Allam (inzo_)
| Affected Software | Affected Version | How to fix |
|---|---|---|
| npm/@remix-run/express | >=2.11.1<2.16.3 | 2.16.3 |
| npm/@react-router/express | >=7.0.0<7.4.1 | 7.4.1 |
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Reference Links
Frequently Asked Questions
What is the severity of GHSA-4q56-crqp-v477?
The severity of GHSA-4q56-crqp-v477 is classified as high due to the potential for URL spoofing in incoming requests.
How do I fix GHSA-4q56-crqp-v477?
To fix GHSA-4q56-crqp-v477, update to @remix-run/express version 2.16.3 or @react-router/express version 7.4.1.
What versions are affected by GHSA-4q56-crqp-v477?
GHSA-4q56-crqp-v477 affects all Remix 2 versions from 2.11.1 to 2.16.3 and all React Router 7 versions from 7.0.0 to 7.4.1.
What type of vulnerability is GHSA-4q56-crqp-v477?
GHSA-4q56-crqp-v477 is a URL spoofing vulnerability that impacts the Express adapter in Remix and React Router.
Who is affected by GHSA-4q56-crqp-v477?
Anyone using the Express adapter with Remix 2 or React Router 7 is potentially affected by GHSA-4q56-crqp-v477.
- collector/github-advisory-latest
- source/GitHub
- alias/GHSA-4q56-crqp-v477
- alias/CVE-2025-31137
- agent/software-canonical-lookup
- agent/weakness
- agent/source
- agent/last-modified-date
- agent/softwarecombine
- agent/references
- agent/tags
- agent/type
- agent/severity
- agent/first-publish-date
- agent/description
- agent/event
- package-manager/npm