CVE-2026-39371 json
RedwoodSDK has a CSRF vulnerability in server function dispatch via GET requests
published 7mo ago modified 3mo ago also GHSA-x8rx-789c-2pxq , EUVD-2026-19888
- cvss
- 8.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 11%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- npm rwsdk 1.0.6
- redwoodjs redwoodsdk 1.0.6
Is CVE-2026-39371 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 7mo ago
Exploit prediction
0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H |
| GitHub | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | rwsdk | >=1.0.0-beta.50, <1.0.6 |
1.0.6 |
Affected products
- redwoodjs sdk
Classification
- Weakness
-
- CWE-352 Cross-Site Request Forgery
References
-
github.com
/redwoodjs/sdk/security/advisories/GHSA-x8rx-789c-2pxq
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-39371
advisory
-
github.com
/redwoodjs/sdk
package
Sources
- CVE List CVE-2026-39371
- GitHub Advisory GHSA-x8rx-789c-2pxq
- NVD CVE-2026-39371
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.