CVE-2026-42342

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Source
https://cve.org/CVERecord?id=CVE-2026-42342
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-42342.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-42342
Aliases
Related
Published
2026-06-02T18:23:02.765Z
Modified
2026-06-26T04:10:08.560904130Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
React Router vulnerable to DoS via unbounded path expansion in __manifest endpoint
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42342.json",
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "2.10.0"
                },
                {
                    "fixed": "2.17.5"
                }
            ]
        }
    ],
    "cwe_ids": [
        "CWE-400"
    ],
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/remix-run/react-router

Affected ranges

Type
GIT
Repo
https://github.com/remix-run/react-router
Events
Introduced
e8e3b004d94a949372e77ce97a543bff5bc6fb89
Fixed
97c8de79c38f107acd15f74d8295c7bf75894a5d
Database specific 
{
    "cpe": "cpe:2.3:a:shopify:react-router:*:*:*:*:*:node.js:*:*",
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ],
    "extracted_events": [
        {
            "introduced": "7.0.0"
        },
        {
            "fixed": "7.15.0"
        },
        {
            "introduced": "7.0.0"
        },
        {
            "fixed": "7.15.0"
        }
    ]
}
Type
GIT
Repo
https://github.com/remix-run/remix
Events
Introduced
bc63b11b54b8ee4c514ddf7c590f3b4abd2d3854
Fixed
8307662161457e1ad710bde0a52de7b7f800abbc
Database specific 
{
    "cpe": "cpe:2.3:a:shopify:remix-run\\/server-runtime:*:*:*:*:*:node.js:*:*",
    "source": "CPE_RANGE",
    "extracted_events": [
        {
            "introduced": "2.10.0"
        },
        {
            "fixed": "2.17.5"
        }
    ]
}

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-42342.json"