CVE-2026-42342 (GCVE-0-2026-42342)
Vulnerability from cvelistv5 – Published: 2026-06-02 18:23 – Updated: 2026-06-03 13:52
VLAI
EPSS
VEX
Title
React Router vulnerable to DoS via unbounded path expansion in __manifest endpoint
Summary
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.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-03 13:52 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/remix-run/react-router/securit… | x_refsource_CONFIRM |
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| remix-run | react-router |
Affected:
>= 7.0.0, < 7.15.0
|
guessed | |
| remix-run | @remix-run/server-runtime |
Affected:
>= 2.10.0, < 2.17.5
|
guessed |
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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