CVE-2026-39371
High
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.
SeverityHigh
CVSS8.1
Exploit probability—
Product
Redwoodjs Redwoodsdk
PublishedApr 7, 2026
First seenApr 7, 2026
Weakness typeCWE-352Cross-site request forgery (CSRF)
How to fix
Update
- redwoodjs redwoodsdk1.0.6 or later
- rwsdk1.0.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| redwoodjs redwoodsdk | 1.0.1 ≤ v < 1.0.6, 1.0.0 | 1.0.6 |
| rwsdknpm | 1.0.0-beta.50 ≤ v < 1.0.6 | 1.0.6 |
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