CVE-2026-39371: CWE-352: Cross-Site Request Forgery (CSRF) in redwoodjs sdk
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.
AI Analysis
Technical Summary
RedwoodJS SDK versions >= 1.0.0-beta.50 and < 1.0.6 contain a CSRF vulnerability (CWE-352) where server functions intended to be invoked via specific HTTP methods can be triggered via GET requests. This bypass allows cross-site GET requests to execute state-changing server functions in cookie-authenticated applications because browsers send SameSite=Lax cookies on top-level GET requests. This impacts all server functions exported from "use server" files, including serverAction() handlers and bare exported functions. The issue is resolved in version 1.0.6.
Potential Impact
An attacker can cause a victim's browser to perform unintended state-changing actions on vulnerable RedwoodJS applications by tricking the user into visiting a malicious link or site. This occurs because the server functions can be invoked via GET requests with the victim's authentication cookies, potentially leading to unauthorized state changes. The vulnerability has a high severity with a CVSS score of 8.1, indicating significant risk to integrity and availability of affected applications.
Mitigation Recommendations
Upgrade RedwoodJS SDK to version 1.0.6 or later, where this vulnerability is fixed. No other mitigation is specified or required as the fix addresses the root cause by enforcing intended HTTP method restrictions on server functions.
CVE-2026-39371: CWE-352: Cross-Site Request Forgery (CSRF) in redwoodjs sdk
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
RedwoodJS SDK versions >= 1.0.0-beta.50 and < 1.0.6 contain a CSRF vulnerability (CWE-352) where server functions intended to be invoked via specific HTTP methods can be triggered via GET requests. This bypass allows cross-site GET requests to execute state-changing server functions in cookie-authenticated applications because browsers send SameSite=Lax cookies on top-level GET requests. This impacts all server functions exported from "use server" files, including serverAction() handlers and bare exported functions. The issue is resolved in version 1.0.6.
Potential Impact
An attacker can cause a victim's browser to perform unintended state-changing actions on vulnerable RedwoodJS applications by tricking the user into visiting a malicious link or site. This occurs because the server functions can be invoked via GET requests with the victim's authentication cookies, potentially leading to unauthorized state changes. The vulnerability has a high severity with a CVSS score of 8.1, indicating significant risk to integrity and availability of affected applications.
Mitigation Recommendations
Upgrade RedwoodJS SDK to version 1.0.6 or later, where this vulnerability is fixed. No other mitigation is specified or required as the fix addresses the root cause by enforcing intended HTTP method restrictions on server functions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-06T21:29:17.350Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d55f0aaaed68159a5629cc
Added to database: 4/7/2026, 7:46:18 PM
Last enriched: 4/7/2026, 8:01:24 PM
Last updated: 4/8/2026, 12:43:50 AM
Views: 17
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