GHSA-qwww-vcr4-c8h2

Summary

React Router: RSC Mode CSRF Bypass Allows Action Execution Before 400 Response

Severity

high

CWE

CWE-352

Published

2026-07-24

Updated

2026-07-24

Advisory details

This is a follow up to CVE-2026-22030 to address related CSRF flows in unstable RSC code paths.

[!NOTE] This only affects your application if you are using the unstable RSC APIs

References

• https://github.com/advisories/GHSA-qwww-vcr4-c8h2
• https://github.com/remix-run/react-router/security/advisories/GHSA-qwww-vcr4-c8h2
• https://github.com/remix-run/react-router/commit/7a71c728ad116bd78699a258b2014ce9585729f5
• https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v830
• https://github.com/remix-run/react-router/releases/tag/react-router@8.3.0
• http://github.com/remix-run/react-router/pull/15311

Related advisories

• CVE-2026-55685 — high · npm/react-router
• CVE-2026-34077 — high · npm/react-router
• CVE-2026-42342 — high · npm/react-router
• CVE-2026-42211 — high · npm/react-router
• CVE-2026-33245 — high · npm/react-router
• CVE-2026-53669 — medium · npm/react-router
• CVE-2026-53667 — medium · npm/react-router
• CVE-2026-53666 — medium · npm/react-router

Is your project exposed to this? Stateward checks every dependency on every pull request and flags it only if your code actually reaches it.

Summarize with AI

ChatGPTClaudePerplexity