Vulnerability Details CVE-2026-53667
React Router is a router for React. In versions 7.11.0 through 7.17.0, the RSCErrorHandler is missing protocol validation, allowing for redirects from untrusted sources. This issue is a follow up to CVE-2026-53667, and only affects consuming applications if they are using the unstable RSC APIs. This issue has been fixed in version 7.18.0.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 28.1%
CVSS Severity
CVSS v3 Score 6.9
References
- https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v7180
- https://github.com/remix-run/react-router/commit/ce596e823f0d7b883a433af1d5a839a8b9fe0242
- https://github.com/remix-run/react-router/pull/15177
- https://github.com/remix-run/react-router/releases/tag/react-router@7.18.0
- https://github.com/remix-run/react-router/security/advisories/GHSA-h8fp-f39c-q6mh
Products affected by CVE-2026-53667
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cpe:2.3:a:shopify:react-router:7.11.0
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cpe:2.3:a:shopify:react-router:7.12.0
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cpe:2.3:a:shopify:react-router:7.13.0
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cpe:2.3:a:shopify:react-router:7.13.1
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cpe:2.3:a:shopify:react-router:7.13.2
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cpe:2.3:a:shopify:react-router:7.14.0
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cpe:2.3:a:shopify:react-router:7.14.1
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cpe:2.3:a:shopify:react-router:7.14.2
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cpe:2.3:a:shopify:react-router:7.15.0
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cpe:2.3:a:shopify:react-router:7.15.1
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cpe:2.3:a:shopify:react-router:7.16.0
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cpe:2.3:a:shopify:react-router:7.17.0