Vulnerability · Published Apr 7, 2026 · Assigned by GitHub_M
CVE-2026-39371RedwoodSDK has a CSRF vulnerability in server function dispatch via GET requests
High 8.1
In plain English
A high-severity cross-site request forgery in sdk from redwoodjs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Official description
RedwoodSDK is a server-first React framework. From 1.0.0-beta.50 to 1.0.5, erver functions exported from "use server" files could be invoked via GET requests, bypassing their intended HTTP method. In cookie-authenticated applications, this allowed cross-site GET navigations to trigger state-changing functions, because browsers send SameSite=Lax cookies on top-level GET requests. This affected all server functions -- both serverAction() handlers and bare exported functions in "use server" files. This vulnerability is fixed in 1.0.6.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | rwsdk | 1.0.6 | GHSA-x8rx-789c-2pxq |
Affected products (as reported)
Weakness: CWE-352 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
References
- https://github.com/redwoodjs/sdk/security/advisories/GHSA-x8rx-789c-2pxq x_refsource_CONFIRM