CVSS 4.0
6.6 mediumCVSS: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:UCVE-2026-40181
Medium (6.6) in shopify react-router. EPSS 0.2% chance of exploitation in the next 30 days. Fixed in react-router 6.30.4, 7.14.1.
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
CVSS 3.1
6.1 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 12% of CVEs (scores of 2026-10-31)
- CWE
- CWE-601
- Published
- Modified
- Record from
- the NVD, synced
Affected
- shopify:react-router
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-2j2x-hqr9-3h42 | npm | react-router | >=7.0.0 <7.14.1 | 7.14.1 |
| GHSA-2j2x-hqr9-3h42 | npm | react-router | >=6.7.0 <6.30.4 | 6.30.4 |
| GHSA-2j2x-hqr9-3h42 | npm | @remix-run/router | >=1.3.0 <1.23.3 | 1.23.3 |