CVE-2026-40181 (GCVE-0-2026-40181)

Vulnerability from cvelistv5 – Published: 2026-06-02 17:55 – Updated: 2026-08-04 21:26
VLAI
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
6.6 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
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
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7639 records in the last 180 days details
References
Impacted 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 Create a notification for this product.
remix-run @remix-run/router Affected: >= 1.3.0, < 1.23.3
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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