CVE-2026-39371CWE-352

RedwoodSDK has a CSRF vulnerability in server function dispatch via GET requests

High · published April 7, 2026

CVSS v3.1
8.1
EPSS
0%
Percentile
8.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00188 · 8.0th percentile
Weakness
CWE-352 · Cross-Site Request Forgery (CSRF)
Published
2026-04-07T19:28Z
EPSS history
Timeline
  • 07 APR 19:28Z
    RedwoodSDK has a CSRF vulnerability in server function dispatch via GET requests
    cvelistv5