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CVE-2026-40181 Details

Description

React Router is a router for React. In versions 7.0.0 through 7.14.0 and 6.7.0 through 6.30.3, certain URLs passed to the redirect function can trigger an open redirect to an external domain due to path values starting with // being reinterpreted as protocol-relative URLs. The level of impact depends on the validation done by the application prior to returning the redirect. This does not impact applications using Declarative Mode (<BrowserRouter>). This is patched in versions 7.14.1 and 6.30.4.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.1 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/remix-run/react-router/security/advisories/GHSA-2j2x-hqr9-3h42	[email protected]	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-601	URL Redirection to Untrusted Site ('Open Redirect')	[email protected]

Affected Products

Product	Versions
shopify react-router	>= 6.7.0, < 6.30.4 >= 7.0.0, < 7.14.1
CPE cpe:2.3:a:shopify:react-router::::::node.js::* Remediation No remediation found in references.

Change History

6 change records found show changes

Date	Action	Recorded By
Aug 4, 2026	CVE Modified	[email protected]
Jul 22, 2026	CVE Translated	[email protected]
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Jun 4, 2026	Initial Analysis	[email protected]
Jun 2, 2026	New CVE Received	[email protected]