Cross-site Request Forgery (CSRF) Affecting rwsdk package, versions >=1.0.0-beta.50 <1.2.3
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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- published28 Apr 2026
- disclosed24 Apr 2026
- creditmthx
Introduced: 24 Apr 2026
CVE-2026-42190 (opens in a new tab)How to fix?
Upgrade rwsdk to version 1.2.3 or higher.
Overview
rwsdk is a Build fast, server-driven webapps on Cloudflare with SSR, RSC, and realtime
Affected versions of this package are vulnerable to Cross-site Request Forgery (CSRF) through the serverAction process. An attacker can trigger unauthorized state changes or actions by inducing an authenticated user's browser to send crafted requests from a same-site origin. This is only exploitable if the application uses server actions in combination with cookie-based authentication and the attacker controls a same-site origin as defined by browser policies.