CVE-2026-42342— React Router vulnerable to DoS via unbounded path expansion in __manifest endpoint
Affected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| remix-run | @remix-run/server-runtime | >= 2.10.0, < 2.17.5 | affected |
| remix-run | react-router | >= 7.0.0, < 7.15.0 | affected |
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I. Basic Information for CVE-2026-42342
Vulnerability Information
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Vulnerability Title
React Router vulnerable to DoS via unbounded path expansion in __manifest endpoint
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: NVD (National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| remix-run | react-router | >= 7.0.0, < 7.15.0 | - | |
| remix-run | @remix-run/server-runtime | >= 2.10.0, < 2.17.5 | - |
II. Public POCs for CVE-2026-42342
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
Qwen3.6-35B-A3B · 7837 chars
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III. Intelligence Information for CVE-2026-42342
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Vendor Advisories for CVE-2026-42342 (1)
Same Patch Batch · remix-run · 2026-06-02 · 6 CVEs total
| CVE-2026-42211 | 8.1 HIGH | React Router's vendored turbo-stream v2 allows arbitrary constructor invocation via TYPE_E |
| CVE-2026-33245 | 8.0 HIGH | React Router vulnerable to XSS in unstable RSC redirect handling via javascript: redirect |
| CVE-2026-34077 | 7.5 HIGH | React Router vulnerable to Denial of Service via reflected user input in single-fetch |
| CVE-2026-33244 | 5.4 MEDIUM | React Router has stored XSS via unescaped Location header in prerendered redirect HTML |
| CVE-2026-40181 | React Router's same-origin redirect with path starting // causes open redirect via protoco |
IV. Related Vulnerabilities
Same product: react-router
- CVE-2026-42211
React Router's vendored turbo-stream v2 allows arbitrary con - CVE-2026-40181
React Router's same-origin redirect with path starting // ca - CVE-2026-34077
React Router vulnerable to Denial of Service via reflected u - CVE-2026-33245
React Router vulnerable to XSS in unstable RSC redirect hand - CVE-2026-33244
React Router has stored XSS via unescaped Location header in
Same vendor: remix-run
- CVE-2026-42211
React Router's vendored turbo-stream v2 allows arbitrary con - CVE-2026-40181
React Router's same-origin redirect with path starting // ca - CVE-2026-34077
React Router vulnerable to Denial of Service via reflected u - CVE-2026-33245
React Router vulnerable to XSS in unstable RSC redirect hand - CVE-2026-33244
React Router has stored XSS via unescaped Location header in
Same weakness: CWE-400
- CVE-2024-14036
Dräger Core 1.0.5 Denial of Service via Malformed SDC Messag - CVE-2026-10650
warmcat libwebsockets SSH Protocol sshd.c lws_ssh_parse_plai - CVE-2019-25724
Dräger Infinity M300 VG2.x Network-Based Denial of Service - CVE-2019-25721
Dräger Infinity M300 VG2.3.1 Network-Based Denial of Service - CVE-2026-45680
OpenTelemetry eBPF Instrumentation: Unbounded BPF internal m
V. Comments for CVE-2026-42342
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