7.5
HIGH
CVE-2025-31137
Remix/React Router URL Spoofing Vulnerability
Description

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.

INFO

Published Date :

April 1, 2025, 7:15 p.m.

Last Modified :

April 1, 2025, 8:26 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2025-31137 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

No affected product recoded yet

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-31137.

URL Resource
https://github.com/remix-run/react-router/security/advisories/GHSA-4q56-crqp-v477

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-31137 vulnerability anywhere in the article.

  • Daily CyberSecurity
Multiple Jenkins Plugin and Core Vulnerabilities Expose Sensitive Data and Execution Paths

The Jenkins project has released a new security advisory highlighting several medium to high severity vulnerabilities affecting Jenkins core and popular community plugins. These issues span from missi ... Read more

Published Date: Apr 03, 2025 (1 day, 6 hours ago)
  • Daily CyberSecurity
CVE-2025-31137: React Router Vulnerability Exposes Web Apps to Cache Poisoning and WAF Bypass Attacks

A newly discovered vulnerability, CVE-2025-31137, has been identified in React Router, a popular library used for managing routing in React applications. Security researcher Rachid Allam and Yasser Al ... Read more

Published Date: Apr 03, 2025 (1 day, 6 hours ago)

The following table lists the changes that have been made to the CVE-2025-31137 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by [email protected]

    Apr. 01, 2025

    Action Type Old Value New Value
    Added Description 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.
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Added CWE CWE-444
    Added Reference https://github.com/remix-run/react-router/security/advisories/GHSA-4q56-crqp-v477
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-31137 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-31137 weaknesses.

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability