Vulnerabilities in pkg:npm/react-router

PACKAGE
Advisory Identifier: GHSA-3cgp-3xvw-98x8
Advisory Summary

CVE-2025-59057 is a HIGH (CVSS 7.6) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting React router libraries in the npm ecosystem. The issue involves react router has xss vulnerability. Remediation is available by upgrading affected packages to version 7.9.0, 2.17.1.

20 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/react-router

20 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:npm/react-router. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-3cgp-3xvw-98x8 CVE-2025-59057 HIGH React Router has XSS Vulnerability
GHSA-8v8x-cx79-35w7 CVE-2026-21884 HIGH React Router SSR XSS in ScrollRestoration
GHSA-f22v-gfqf-p8f3 CVE-2026-33244 MODERATE React Router has stored XSS via unescaped Location header in prerendered redirect HTML
GHSA-jjmj-jmhj-qwj2 CVE-2026-53668 MODERATE React Router: Open redirect leading to XSS
GHSA-qwww-vcr4-c8h2 - HIGH React Router: RSC Mode CSRF Bypass Allows Action Execution Before 400 Response
GHSA-2j2x-hqr9-3h42 CVE-2026-40181 MODERATE React Router's same-origin redirect with path starting // causes open redirect via protocol-relative URL reinterpretation
GHSA-chx6-hx7r-mcp5 CVE-2026-55685 HIGH React Router: Unauthenticated Denial of Service via Inefficient Route Matching
GHSA-wrjc-x8rr-h8h6 CVE-2026-53669 MODERATE React Router: Open redirect via backslash in <Link> and useNavigate (CVE-2025-68470 bypass)
GHSA-h8fp-f39c-q6mh CVE-2026-53667 MODERATE React Router: RSCErrorHandler Missing Protocol Validation (XSS)
GHSA-337j-9hxr-rhxg CVE-2026-53666 MODERATE React Router: Arbitrary Constructor Injection via deserializeErrors() in React Router SSR Hydration
GHSA-84g9-w2xq-vcv6 CVE-2026-53663 LOW React Router: Potential CSRF via PUT/PATCH/DELETE document requests
GHSA-h5cw-625j-3rxh CVE-2026-22030 MODERATE React Router has CSRF issue in Action/Server Action Request Processing
GHSA-rxv8-25v2-qmq8 CVE-2026-34077 HIGH React Router vulnerable to Denial of Service via reflected user input in single-fetch
GHSA-8x6r-g9mw-2r78 CVE-2026-42342 HIGH React Router vulnerable to DoS via unbounded path expansion in __manifest endpoint
GHSA-49rj-9fvp-4h2h CVE-2026-42211 HIGH React Router's vendored turbo-stream v2 allows arbitrary constructor invocation via TYPE_ERROR deserialization leading to Unauth RCE
GHSA-8646-j5j9-6r62 CVE-2026-33245 HIGH React Router vulnerable to XSS in unstable RSC redirect handling via javascript: redirect targets
GHSA-cpj6-fhp6-mr6j CVE-2025-43865 HIGH React Router allows pre-render data spoofing on React-Router framework mode
GHSA-2w69-qvjg-hvjx CVE-2026-22029 HIGH React Router vulnerable to XSS via Open Redirects
GHSA-9jcx-v3wj-wh4m CVE-2025-68470 MODERATE React Router has unexpected external redirect via untrusted paths
GHSA-f46r-rw29-r322 CVE-2025-43864 HIGH React Router allows a DoS via cache poisoning by forcing SPA mode

CVE-2025-59057 at a Glance

CVE Identifier CVE-2025-59057
GHSA Identifier GHSA-3cgp-3xvw-98x8
Severity HIGH
CVSS v3.1 Base Score 7.6
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product React router
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 7.6

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2025-59057

To remediate this vulnerability, upgrade all affected React router dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

react-router fixed: 7.9.0
npm install react-router@7.9.0
@remix-run/react fixed: 2.17.1
npm install @remix-run/react@2.17.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release:

npm ls react-router

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2025-59057, inspect your project dependencies using npm:

npm ls react-router

Analyze the terminal output to locate any version of React router in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 7.9.0), your application is affected.

Note: The npm ls react-router command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In React router, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

A XSS vulnerability exists in in React Router's `meta()`/`<Meta>` APIs in [Framework Mode](https://reactrouter.com/start/modes#framework) when generating `script:ld+json` tags which could allow arbitrary JavaScript execution during SSR if untrusted content is used to generate the tag. > [!NOTE] > This does not impact applications using [Declarative Mode](https://reactrouter.com/start/modes#declarative) (`<BrowserRouter>`) or [Data Mode](https://reactrouter.com/start/modes#data) (`createBrowserRouter`/`<RouterProvider>`).

CVE-2025-59057 Affected React router Versions

2 component(s)
Fixed Versions:
7.9.02.17.1
Product / Package Ecosystem Affected Versions Fixed Version
react-router
npm
≥ 7.0.0
< 7.9.0
7.9.0
@remix-run/react
npm
≥ 1.15.0
< 2.17.1
2.17.1

References

Frequently Asked Questions

What is CVE-2025-59057?
CVE-2025-59057 is a security vulnerability in React router involving React Router has XSS Vulnerability under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which React router versions are affected?
Affected versions include releases prior to 7.9.0, 2.17.1 across affected packages: react-router, @remix-run/react.
What version fixes CVE-2025-59057?
Upgrading to 7.9.0, 2.17.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is react-router affected?
Yes, react-router is affected in releases prior to 7.9.0. Upgrade your dependency to 7.9.0 or later.
Is @remix-run/react affected?
Yes, @remix-run/react is affected in releases prior to 2.17.1. Upgrade your dependency to 2.17.1 or later.
What is the CVSS score of CVE-2025-59057?
CVE-2025-59057 has a CVSS v3.1 base score of 7.6 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N.
What CWE is associated with CVE-2025-59057?
CVE-2025-59057 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check npm dependencies for CVE-2025-59057?
Run the dependency tree command: 'npm ls react-router'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
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  "id" : "GHSA-3cgp-3xvw-98x8",
  "modified" : "2026-09-08T16:31:34Z",
  "published" : "2026-01-08T20:42:20Z",
  "aliases" : [ "CVE-2025-59057" ],
  "summary" : "React Router has XSS Vulnerability",
  "details" : "A XSS vulnerability exists in in React Router's `meta()`/`<Meta>` APIs in [Framework Mode](https://reactrouter.com/start/modes#framework) when generating `script:ld+json` tags which could allow arbitrary JavaScript execution during SSR if untrusted content is used to generate the tag.\n\n> [!NOTE]\n> This does not impact applications using [Declarative Mode](https://reactrouter.com/start/modes#declarative) (`<BrowserRouter>`) or [Data Mode](https://reactrouter.com/start/modes#data) (`createBrowserRouter`/`<RouterProvider>`).",
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    "url" : "https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v790"
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    "type" : "WEB",
    "url" : "https://github.com/remix-run/react-router/releases/tag/react-router@7.9.0"
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    "type" : "WEB",
    "url" : "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-59057.json"
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    "github_reviewed_at" : "2026-01-08T20:42:20Z",
    "nvd_published_at" : "2026-01-10T03:15:48Z"
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}