Vulnerability Details CVE-2026-42342
React Router is a router for React. In versions 7.0.0 through 7.14.x of react-router and versions 2.10.0 through 2.17.4 of @remix-run/server-runtime, certain crafted requests can consume disproportionate server resources via unbounded path expansion in the __manifest endpoint, resulting in response time degradation and/or service unavailability for end users. This affects React Router Framework Mode applications as well as Remix applications. This does not impact applications using Declarative Mode (`<BrowserRouter>`) or Data Mode (`createBrowserRouter/<RouterProvider>`). This is patched in react-router version 7.15.0 and @remix-run/server-runtime version 2.17.5.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 17.3%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2026-42342
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cpe:2.3:a:shopify:react-router:7.0.0
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cpe:2.3:a:shopify:react-router:7.0.1
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cpe:2.3:a:shopify:react-router:7.0.2
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cpe:2.3:a:shopify:react-router:7.1.0
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cpe:2.3:a:shopify:react-router:7.1.1
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cpe:2.3:a:shopify:react-router:7.1.2
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cpe:2.3:a:shopify:react-router:7.1.3
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cpe:2.3:a:shopify:react-router:7.1.4
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cpe:2.3:a:shopify:react-router:7.1.5
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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:7.2.0
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cpe:2.3:a:shopify:react-router:7.3.0
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cpe:2.3:a:shopify:react-router:7.4.0
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cpe:2.3:a:shopify:react-router:7.4.1
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cpe:2.3:a:shopify:react-router:7.5.0
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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
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cpe:2.3:a:shopify:remix-run/server-runtime:2.10.0
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cpe:2.3:a:shopify:remix-run/server-runtime:2.10.1
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cpe:2.3:a:shopify:remix-run/server-runtime:2.10.2
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cpe:2.3:a:shopify:remix-run/server-runtime:2.10.3
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cpe:2.3:a:shopify:remix-run/server-runtime:2.11.0
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cpe:2.3:a:shopify:remix-run/server-runtime:2.11.1
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cpe:2.3:a:shopify:remix-run/server-runtime:2.11.2
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cpe:2.3:a:shopify:remix-run/server-runtime:2.12.0
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cpe:2.3:a:shopify:remix-run/server-runtime:2.12.1
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cpe:2.3:a:shopify:remix-run/server-runtime:2.13.0
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cpe:2.3:a:shopify:remix-run/server-runtime:2.13.1
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cpe:2.3:a:shopify:remix-run/server-runtime:2.14.0
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cpe:2.3:a:shopify:remix-run/server-runtime:2.15.0
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cpe:2.3:a:shopify:remix-run/server-runtime:2.15.1
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cpe:2.3:a:shopify:remix-run/server-runtime:2.15.2
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cpe:2.3:a:shopify:remix-run/server-runtime:2.15.3
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cpe:2.3:a:shopify:remix-run/server-runtime:2.16.0
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cpe:2.3:a:shopify:remix-run/server-runtime:2.16.1
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cpe:2.3:a:shopify:remix-run/server-runtime:2.16.2
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cpe:2.3:a:shopify:remix-run/server-runtime:2.16.3
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cpe:2.3:a:shopify:remix-run/server-runtime:2.16.4
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cpe:2.3:a:shopify:remix-run/server-runtime:2.16.5
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cpe:2.3:a:shopify:remix-run/server-runtime:2.16.6
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cpe:2.3:a:shopify:remix-run/server-runtime:2.16.7
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cpe:2.3:a:shopify:remix-run/server-runtime:2.16.8
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cpe:2.3:a:shopify:remix-run/server-runtime:2.17.0
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cpe:2.3:a:shopify:remix-run/server-runtime:2.17.1
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cpe:2.3:a:shopify:remix-run/server-runtime:2.17.2
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cpe:2.3:a:shopify:remix-run/server-runtime:2.17.3
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cpe:2.3:a:shopify:remix-run/server-runtime:2.17.4