GHSA-h8fp-f39c-q6mhPublished

React Router: RSCErrorHandler Missing Protocol Validation (XSS)

Exact source revision recorded 24 Oct 2026 13:17:17 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

osv · GHSA-h8fp-f39c-q6mh

Published

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

Source published: 23 Jul 2026 19:35:57 UTC
Source modified: 10 Sep 2026 03:50:52 UTC
Observed here: 24 Oct 2026 13:17:17 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS_V3 · CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N

Publisher rating · MODERATE