CVE-2026-33245— React Router vulnerable to XSS in unstable RSC redirect handling via javascript: redirect targets
Possible ATT&CK Techniques 2AI
T1059 · Command and Scripting Interpreter T1189 · Drive-by CompromiseAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| remix-run | react-router | >= 7.7.0, < 7.13.2 | affected |
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I. Basic Information for CVE-2026-33245
Vulnerability Information
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Vulnerability Title
React Router vulnerable to XSS in unstable RSC redirect handling via javascript: redirect targets
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:H/PR:N/UI:R/S:C/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: NVD (National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| remix-run | react-router | >= 7.7.0, < 7.13.2 | - |
II. Public POCs for CVE-2026-33245
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-33245 (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-2026-42342 | 7.5 HIGH | React Router vulnerable to DoS via unbounded path expansion in __manifest endpoint |
| 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-2026-42342
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-2026-34077
React Router vulnerable to Denial of Service via reflected u - 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-2026-34077
React Router vulnerable to Denial of Service via reflected u - CVE-2026-33244
React Router has stored XSS via unescaped Location header in
Same weakness: CWE-79
- CVE-2026-35212
OpenCTI has XSS in the rendering of email-message observable - CVE-2026-42849
authentik: Reflected XSS in SFE AutosubmitStage allows IDP a - CVE-2026-5385
GLPI 11.0.0 - Stored XSS in knowledge base - CVE-2026-33244
React Router has stored XSS via unescaped Location header in - CVE-2026-28116
WordPress Progress Planner plugin <= 1.9.0 - Cross Site Scri
V. Comments for CVE-2026-33245
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