CVE-2026-53667 Details
Description
React Router is a router for React. In versions 7.11.0 through 7.17.0, the RSCErrorHandler is missing protocol validation, allowing for redirects from untrusted sources. This issue is a follow up to CVE-2026-53667, and only affects consuming applications if they are using the unstable RSC APIs. This issue has been fixed in version 7.18.0.
A vulnerability in React Router's handling of redirects in the unstable React Server Components (RSC) API can lead to cross-site scripting (XSS) attacks. This issue is present in versions 7.11.0 prior to 7.18.0. The vulnerability arises because the RSCErrorHandler does not properly validate redirect protocols, allowing redirects from untrusted sources to be processed. This could be exploited by an attacker to inject malicious scripts via the redirect target, potentially leading to XSS. The issue only affects applications using the unstable RSC APIs.
Users can upgrade to React Router version 7.18.0 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 28, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| shopify react-router | >= 7.11.0, < 7.18.0 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 3, 2026 | Initial Analysis | [email protected] |
| Jul 28, 2026 | CVE Modified | CISA-ADP |
| Jul 27, 2026 | New CVE Received | [email protected] |