Cross-site Request Forgery (CSRF) Affecting @remix-run/server-runtime package, versions <2.17.3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-REMIXRUNSERVERRUNTIME-14908428
- published9 Jan 2026
- disclosed8 Jan 2026
- creditOceandust
Introduced: 8 Jan 2026
CVE-2026-22030 (opens in a new tab)How to fix?
Upgrade @remix-run/server-runtime to version 2.17.3 or higher.
Overview
@remix-run/server-runtime is a Server runtime for Remix
Affected versions of this package are vulnerable to Cross-site Request Forgery (CSRF) due to the improper origin checks of UI route submissions in server-side route action handlers in Framework Mode. An attacker can execute unauthorized actions by tricking a user into submitting a crafted POST request to a UI route.
Note:
This issue does not impact applications using Declarative Mode <BrowserRouter> or Data Mode createBrowserRouter/<RouterProvider>.