Description
React Router is a router for React. In versions 7.0.0 through 7.17.0, the manifest endpoint could be accessed via unauthenticated targeted requests that would put heavy load on the server and slow down response times. This issue is a follow up to CVE-2026-42342, and does not does not impact React Router applications using Declarative Mode (<BrowserRouter>) or Data Mode (createBrowserRouter/<RouterProvider>). This issue has been fixed in version 7.18.0.
Analysis and contextual insights are available on OpenCVE Cloud.
Remediation
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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Advisories
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-chx6-hx7r-mcp5 | React Router: Unauthenticated Denial of Service via Inefficient Route Matching |
References
History
Mon, 27 Jul 2026 23:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | React Router is a router for React. In versions 7.0.0 through 7.17.0, the manifest endpoint could be accessed via unauthenticated targeted requests that would put heavy load on the server and slow down response times. This issue is a follow up to CVE-2026-42342, and does not does not impact React Router applications using Declarative Mode (<BrowserRouter>) or Data Mode (createBrowserRouter/<RouterProvider>). This issue has been fixed in version 7.18.0. | |
| Title | React Router: Unauthenticated Denial of Service via Inefficient Route Matching | |
| Weaknesses | CWE-400 CWE-407 |
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| References |
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| Metrics |
cvssV4_0
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Subscriptions
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-07-27T21:45:57.751Z
Reserved: 2026-06-17T00:13:10.650Z
Link: CVE-2026-55685
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OpenCVE Enrichment
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Github GHSA