Vulnerability Details CVE-2026-33244
React Router is a router for React. In versions 7.5.1 through 7.13.1, when using Framework Mode with pre-rendering enabled, improper neutralization of the HTTP `Location` header value can permit Cross-Site Scripting (XSS) in the statically generated HTML files if the redirect location comes from an untrusted source. This does not impact applications using Declarative Mode (`<BrowserRouter>`) or Data Mode (`createBrowserRouter/<RouterProvider>`). This is patched in version 7.13.2.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 8.6%
CVSS Severity
CVSS v3 Score 5.4
Products affected by CVE-2026-33244
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cpe:2.3:a:shopify:react-router:7.10.0
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cpe:2.3:a:shopify:react-router:7.10.1
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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:7.5.1
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cpe:2.3:a:shopify:react-router:7.5.2
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cpe:2.3:a:shopify:react-router:7.5.3
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cpe:2.3:a:shopify:react-router:7.6.0
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cpe:2.3:a:shopify:react-router:7.6.1
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cpe:2.3:a:shopify:react-router:7.6.2
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cpe:2.3:a:shopify:react-router:7.6.3
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cpe:2.3:a:shopify:react-router:7.7.0
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cpe:2.3:a:shopify:react-router:7.7.1
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cpe:2.3:a:shopify:react-router:7.8.0
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cpe:2.3:a:shopify:react-router:7.8.1
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cpe:2.3:a:shopify:react-router:7.8.2
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cpe:2.3:a:shopify:react-router:7.9.0
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cpe:2.3:a:shopify:react-router:7.9.1
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cpe:2.3:a:shopify:react-router:7.9.2
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cpe:2.3:a:shopify:react-router:7.9.3
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cpe:2.3:a:shopify:react-router:7.9.4
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cpe:2.3:a:shopify:react-router:7.9.5
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cpe:2.3:a:shopify:react-router:7.9.6