CVE-2026-40181 (GCVE-0-2026-40181)
Vulnerability from cvelistv5 – Published: 2026-06-02 17:55 – Updated: 2026-08-04 21:26
VLAI
EPSS
VEX
Title
React Router's same-origin redirect with path starting // causes open redirect via protocol-relative URL reinterpretation
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-03 15:55 UTC
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/remix-run/react-router/securit… | x_refsource_CONFIRM |
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| remix-run | react-router |
Affected:
>= 7.0.0, < 7.14.1
Affected: >= 6.7.0, < 6.30.4 |
guessed | |
| remix-run | @remix-run/router |
Affected:
>= 1.3.0, < 1.23.3
|
guessed |
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