React Router has CSRF issue in Action/Server Action Request Processing
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Security bypass, Tampering
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Partial Red Hat: 4 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-346 and CWE-352.
Summary
React Router is a router for React. In @remix-run/server-runtime version prior to 2.17.3. and react-router 7.0.0 through 7.11.0, React Router (or Remix v2) is vulnerable to CSRF attacks on document POST requests to UI routes when using server-side route action handlers in Framework Mode, or when using React Server Actions in the new unstable RSC modes. There is no impact if Declarative Mode (<BrowserRouter>) or Data Mode (createBrowserRouter/<RouterProvider>) is being used. This issue has been patched in @remix-run/server-runtime version 2.17.3 and react-router version 7.12.0.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| remix-run | react-router | @remix-run/router < 2.17.3; react-router >= 7.0.0, < 7.12.0 | — | No fix listed | CNA |
| — | react-router (npm) | 7.0.0 to before 7.12.0 | 7.12.0 | Patch available | GHSA-h5cw-625j-3rxh |
| — | @remix-run/server-runtime (npm) | before 2.17.3 | 2.17.3 | Patch available | GHSA-h5cw-625j-3rxh |
- react-router Vendorremix-run Affected @remix-run/router < 2.17.3; react-router >= 7.0.0, < 7.12.0 Fixed in — No fix listed CNA
- react-router (npm) Vendor— Affected 7.0.0 to before 7.12.0 Fixed in 7.12.0 Patch available GHSA-h5cw-625j-3rxh
- @remix-run/server-runtime (npm) Vendor— Affected before 2.17.3 Fixed in 2.17.3 Patch available GHSA-h5cw-625j-3rxh
Remediation
- Fix · GHSA-h5cw-625j-3rxh react-router (npm) Fixed in 7.12.0 Advisory →
- Fix · GHSA-h5cw-625j-3rxh @remix-run/server-runtime (npm) Fixed in 2.17.3 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Ansible Automation Platform 2 | Affected | No fix yet: Fix deferred |
| Red Hat Build of Kueue | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift AI (RHOAI) | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-22030
- 2026-10-03 Alias added: GHSA-h5cw-625j-3rxh
References
More remix-run React-router vulnerabilities
- TI-2026-40200 React Router: Unauthenticated Denial of Service via Inefficient Route Matching CVSS 4.0HIGH 8.7
- TI-2026-30645 React Router vulnerable to DoS via unbounded path expansion in __manifest endpoint CVSS 3.1HIGH 7.5
- TI-2026-26400 React Router vulnerable to Denial of Service via reflected user input in single-fetch CVSS 3.1HIGH 7.5
- TI-2026-17723 React Router vulnerable to XSS via Open Redirects CVSS 3.1HIGH 8.0
- TI-2026-17585 React Router SSR XSS in ScrollRestoration CVSS 3.1HIGH 8.2
- TI-2026-30532 Deserialization of untrusted data in remix-run react-router CVSS 3.1HIGH 8.1
Sources
- CVE-2026-22030 · CVE Program
- CVE-2026-22030 · NVD
- FIRST EPSS
- GHSA-h5cw-625j-3rxh · GitHub Advisory Database · CC BY 4.0
- CVE-2026-22030 · Red Hat security data · CC BY 4.0
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