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CVE-2025-31137

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

Published: Apr 1, 2025Updated: Apr 1, 2025 Sources: CVE List NVD GHSA BDUCWE-444
7.5HIGH
NVD MITRE
EPSS Score
1.2%
Top 36.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-444

Affected Products

Сообщество свободного программного обеспечения
oss-projectaka fsf
RemixOn-premWeb App
Web & CMS Plugins / cms-core
React RouterOn-premLibrary
OSS Libraries / web-framework
npm
package-ecosystem
@react-router/express
OSS Libraries
@remix-run/express
OSS Libraries
remix-run
oss-project
react-routerLibrary
OSS Libraries / web-framework

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://github.com/remix-run/react-router/security/advisories/GHSA-4q56-crqp-v477
github.com
https://nvd.nist.gov/vuln/detail/CVE-2025-31137
nvd.nist.gov
https://github.com/remix-run/react-router
github.com

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