CVE-2026-42342

{"id": "CVE-2026-42342", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-42342", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-03T13:52:31.015400Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "remix-run", "product": "react-router", "versions": [{"status": "affected", "version": ">= 7.0.0, < 7.15.0"}]}, {"vendor": "remix-run", "product": "@remix-run/server-runtime", "versions": [{"status": "affected", "version": ">= 2.10.0, < 2.17.5"}]}]}], "published": "2026-06-02T20:16:36.693", "references": [{"url": "https://github.com/remix-run/react-router/security/advisories/GHSA-8x6r-g9mw-2r78", "tags": ["Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-400"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "React Router es un router para React. En las versiones 7.0.0 a 7.14.x de react-router y las versiones 2.10.0 a 2.17.4 de @remix-run/server-runtime, ciertas solicitudes especialmente dise\u00f1adas pueden consumir recursos desproporcionados del servidor a trav\u00e9s de una expansi\u00f3n de ruta ilimitada en el endpoint __manifest, lo que resulta en una degradaci\u00f3n del tiempo de respuesta y/o indisponibilidad del servicio para los usuarios finales. Esto afecta a las aplicaciones en modo Framework de React Router, as\u00ed como a las aplicaciones Remix. Esto no tiene impacto en las aplicaciones que utilizan el Modo Declarativo ('<BrowserRouter>') o el Modo de Datos ('createBrowserRouter/<RouterProvider>'). Esto se ha parcheado en la versi\u00f3n 7.15.0 de react-router y en la versi\u00f3n 2.17.5 de @remix-run/server-runtime."}], "lastModified": "2026-07-21T19:10:00.107", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:shopify:react-router:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "C3DEED53-C992-4595-AAA9-7A2BD7C06BA6", "versionEndExcluding": "7.15.0", "versionStartIncluding": "7.0.0"}, {"criteria": "cpe:2.3:a:shopify:remix-run\\/server-runtime:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "7C1BF7A9-CED0-415C-95CA-0CB594732263", "versionEndExcluding": "2.17.5", "versionStartIncluding": "2.10.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}