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CVE-2026-40181

React Router's same-origin redirect with path starting // causes open redirect via protocol-relative URL reinterpretation PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
remix-run / react-routeraffected >= 7.0.0, < 7.14.1; affected >= 6.7.0, < 6.30.4
remix-run / @remix-run/routeraffected >= 1.3.0, < 1.23.3

CWE

CWE-601

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.