React Router hat CSRF-Problem bei der Verarbeitung von Action/Server Action-Anfragen

The primary impact of CVE-2026-22030 is the potential for attackers to exploit CSRF vulnerabilities to perform unauthorized actions within a React Router application. Specifically, an attacker could craft malicious requests that, when triggered by a user, would result in unintended document POST requests being sent to the server. This could lead to data modification, account compromise, or other sensitive operations depending on the application's functionality. The vulnerability is particularly concerning in applications that handle sensitive data or perform critical actions via POST requests, as it bypasses standard authentication mechanisms.

Applications built with React Router (or Remix v2) that utilize server-side route action handlers in Framework Mode, or React Server Actions in unstable RSC modes, are at risk. This includes applications that handle sensitive data or perform critical actions via POST requests. Developers using older versions of React Router and relying on Declarative or Data Mode are not directly affected.

• nodejs: Monitor application logs for unusual POST requests to UI routes, especially those originating from external sources.

grep -i 'POST /ui/route' access.log

• nodejs: Check for any unauthorized modifications to data or user accounts that could be attributed to CSRF attacks.

# Review audit logs for suspicious activity
journalctl -u your-app -g 'CSRF attack'

• generic web: Inspect response headers for unexpected redirects or changes in application state after a user visits a potentially malicious link. Use curl to test endpoints.

curl -v https://your-app.com/ui/route

1. 2026-01-08Disclosure

   disclosure

1. Reserviert2026-01-05
2. Veröffentlicht2026-01-08
3. Geändert2026-02-03
4. EPSS aktualisiert2026-03-23

The primary mitigation for CVE-2026-22030 is to upgrade to React Router version 7.12.0 or later. This version includes fixes to prevent the CSRF vulnerability. If upgrading is not immediately feasible, consider implementing additional CSRF protection measures, such as using CSRF tokens for all document POST requests. Ensure that your application's server-side route handlers properly validate and sanitize all incoming data to prevent malicious input from being processed. Review and update any existing CSRF protection mechanisms to ensure they are effective against this specific vulnerability.

Zuletzt aktualisiert

7.13.1vor 2 Monaten