XSS Vulnerability in React Router Versions 6.30.2 to 6.30.4 and 7.9.6 to 7.12.0 by Remix
CVE-2026-53668

6.9MEDIUM

Key Information:

Vendor

Remix-run

Status
React-router
Vendor
CVE Published:
27 July 2026

What is CVE-2026-53668?

In React Router versions 6.30.2 through 6.30.4 and 7.9.6 through 7.12.0, applications that permit open redirects are susceptible to a Cross-Site Scripting (XSS) vulnerability. This flaw enables attackers to generate malicious URLs that can redirect users to harmful external sites, potentially leading to exploitation via XSS attacks. Users are advised to upgrade to version 7.13.0 or higher to mitigate this risk. For more details, refer to the security advisory and the release notes.

Affected Version(s)

react-router >= 6.30.2, <= 6.30.4 <= 6.30.2, 6.30.4

react-router >= 7.9.6, < 7.13.0 < 7.9.6, 7.13.0

References

https://github.com/remix-run/react-router/security/adviso...
x_refsource_CONFIRM
https://github.com/remix-run/react-router/pull/14718
x_refsource_MISC
https://github.com/remix-run/react-router/commit/3a5b5ad0...
x_refsource_MISC

CVSS V3.1

Score:
6.9
Severity:
MEDIUM
Confidentiality:
High
Integrity:
Low
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.