Skip to content
Fencer Intel
high —

GHSA-qwww-vcr4-c8h2 json

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

published 3mo ago modified 2mo ago

cvss
—
not scored
cisa kev
Not listed
not in CISA's catalog
epss
—
no score, EPSS covers CVEs only
public exploits
0
none known

Summary

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

Patch / fix

  • npm react-router 7.18.2, 8.3.0

Is GHSA-qwww-vcr4-c8h2 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 Fencer

Affected packages

ecosystem package affected fixed in
npm react-router
>=7.12.0, <7.18.2
>=8.0.0, <8.3.0
7.18.2
8.3.0

Classification

Weakness
  • CWE-352 Cross-Site Request Forgery

References

Sources

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.

The maintainers of remix-run/react-router published their own advisory on GitHub. Reviewed sources take precedence over it.