remix-run/react-router · Security
React Router: RSCErrorHandler Missing Protocol Validation (XSS)
- GHSA ID
- GHSA-h8fp-f39c-q6mh
- CVE ID
- CVE-2026-53667
- Severity
- medium
- Published
- Updated
- CVSS
- 6.9 · CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N
- CVSS v3
- 6.9 · CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N
Description
This is a follow up to https://github.com/remix-run/react-router/security/advisories/GHSA-8646-j5j9-6r62. React Router was alerted of a code path in the (unstable) RSC error handling path in which redirects from untrusted sources could still result in an XSS vector via attacker-supplied redirect targets
[!NOTE] This only affects your application if you are using the unstable RSC APIs
CWEs
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
References
- https://github.com/remix-run/react-router/security/advisories/GHSA-h8fp-f39c-q6mh ↗
- https://github.com/remix-run/react-router/pull/15177 ↗
- https://github.com/remix-run/react-router/commit/ce596e823f0d7b883a433af1d5a839a8b9fe0242 ↗
- https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v7180 ↗
- https://github.com/remix-run/react-router/releases/tag/[email protected] ↗
- https://github.com/advisories/GHSA-h8fp-f39c-q6mh ↗