CVE-2026-34077— React Router vulnerable to Denial of Service via reflected user input in single-fetch
Possible ATT&CK Techniques 1AI
T1189 · Drive-by CompromiseAffected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| remix-run | react-router | >= 7.0.0, < 7.14.0 | affected |
| remix-run | turbo-stream | < 3.0.0 | affected |
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I. Basic Information for CVE-2026-34077
Vulnerability Information
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Vulnerability Title
React Router vulnerable to Denial of Service via reflected user input in single-fetch
Source: NVD (National Vulnerability Database)
Vulnerability Description
React Router is a router for React. In versions 7.7.0 through 7.13.1, when using React Router's unstable React Server Components (RSC) APIs, there is a potential client-side Cross-Site Scripting (XSS) vulnerability in the RSC redirect handling if redirects come from untrusted sources. This does not impact applications that are not using the unstable RSC APIs in React Router. This is patched in version 7.13.2.
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
不加限制或调节的资源分配
Source: NVD (National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| remix-run | react-router | >= 7.0.0, < 7.14.0 | - | |
| remix-run | turbo-stream | < 3.0.0 | - |
II. Public POCs for CVE-2026-34077
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
Qwen3.6-35B-A3B · 7978 chars
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III. Intelligence Information for CVE-2026-34077
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Vendor Advisories for CVE-2026-34077 (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-2026-42342 | 7.5 HIGH | React Router vulnerable to DoS via unbounded path expansion in __manifest endpoint |
| 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-2026-42342
React Router vulnerable to DoS via unbounded path expansion - 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-2026-33245
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-2026-42342
React Router vulnerable to DoS via unbounded path expansion - 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-2026-33245
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-770
- CVE-2026-28299
SolarWinds Web Help Desk Denial-of-Service Vulnerability - CVE-2026-48597
Atom table exhaustion via untrusted URL scheme in Tesla.Adap - CVE-2026-49754
HTTP/2 CONTINUATION flood in Mint client via unbounded heade - CVE-2026-48862
Unbounded conn.streams growth in Mint HTTP/2 client via unen - CVE-2026-49140
Nanobot < 0.2.1 Denial of Service via Matrix Media Download
V. Comments for CVE-2026-34077
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