CVE-2026-53669: React Router Open Redirect Vulnerability

MODERATE
Advisory Identifier: GHSA-wrjc-x8rr-h8h6
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CWE-601
Published
Advisory Summary

CVE-2026-53669 is a MODERATE open redirect vulnerability (CWE-601: URL Redirection to Untrusted Site ('Open Redirect')) affecting React Router libraries in the npm ecosystem. The issue involves open redirect via backslash in <link> and usenavigate (cve-2025-68470 bypass). Remediation is available by upgrading affected packages to version 7.18.0.

CVE-2026-53669 at a Glance

CVE Identifier CVE-2026-53669
GHSA Identifier GHSA-wrjc-x8rr-h8h6
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-601: URL Redirection to Untrusted Site ('Open Redirect')
Affected Product React Router
Package Ecosystem npm
Published Date
Last Updated

How to Fix CVE-2026-53669

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: 7.18.0 
npm install react-router@7.18.0
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-2026-53669, 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 7.18.0), 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-601: URL Redirection to Untrusted Site ('Open Redirect'), where the web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect. 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

This is a follow up to [CVE-2025-68470](https://github.com/remix-run/react-router/security/advisories/GHSA-9jcx-v3wj-wh4m). React Router was alerted to certain scenarios in which the fix there was incomplete so there still existed some scenarios where attacker supplied paths passed to navigation mechanisms could result in unexpected external navigations.

CVE-2026-53669 Affected React Router Versions

1 component(s)
Fixed Versions:
7.18.0
Product / Package Ecosystem Affected Versions Fixed Version
react-router
npm/react-router
npm
≥ 6.0.0
< 7.18.0
7.18.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/remix-run/react-router/security/advisories/GHSA-wrjc-x8rr-h8h6
React Router Source Repository REPOSITORY
https://github.com/remix-run/react-router/pull/15176
React Router Source Repository REPOSITORY
https://github.com/remix-run/react-router
React Router Source Repository REPOSITORY
https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v7180
React Router Release RELEASE
https://github.com/remix-run/react-router/releases/tag/react-router@7.18.0
React Router Source Repository REPOSITORY
http://github.com/remix-run/react-router/pull/15176

Frequently Asked Questions

What is CVE-2026-53669?
CVE-2026-53669 is a security vulnerability in React Router involving Open redirect via backslash in <Link> and useNavigate (CVE-2025-68470 bypass) under CWE-601: URL Redirection to Untrusted Site ('Open Redirect').
Which React Router versions are affected?
Affected versions include releases prior to 7.18.0 across affected packages: react-router.
What version fixes CVE-2026-53669?
Upgrading to 7.18.0 (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 7.18.0. Upgrade your dependency to 7.18.0 or later.
What CWE is associated with CVE-2026-53669?
CVE-2026-53669 is classified under CWE-601: URL Redirection to Untrusted Site ('Open Redirect') (The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.).
How can I check npm dependencies for CVE-2026-53669?
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
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-wrjc-x8rr-h8h6",
  "modified" : "2026-07-23T19:38:28Z",
  "published" : "2026-07-23T19:38:28Z",
  "aliases" : [ "CVE-2026-53669" ],
  "summary" : "React Router: Open redirect via backslash in <Link> and useNavigate (CVE-2025-68470 bypass)",
  "details" : "This is a follow up to [CVE-2025-68470](https://github.com/remix-run/react-router/security/advisories/GHSA-9jcx-v3wj-wh4m).  React Router was alerted to certain scenarios in which the fix there was incomplete so there still existed some scenarios where attacker supplied paths passed to navigation mechanisms could result in unexpected external navigations.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "react-router"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.0.0"
      }, {
        "fixed" : "7.18.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/remix-run/react-router/security/advisories/GHSA-wrjc-x8rr-h8h6"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/remix-run/react-router/pull/15176"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/remix-run/react-router"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v7180"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/remix-run/react-router/releases/tag/react-router@7.18.0"
  }, {
    "type" : "WEB",
    "url" : "http://github.com/remix-run/react-router/pull/15176"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-601" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-07-23T19:38:28Z",
    "nvd_published_at" : null
  }
}