GHSA-h8fp-f39c-q6mh

Suggest an improvement
Source
https://github.com/advisories/GHSA-h8fp-f39c-q6mh
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-h8fp-f39c-q6mh/GHSA-h8fp-f39c-q6mh.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-h8fp-f39c-q6mh
Aliases
Downstream
CGA (9)
Published
2026-07-23T19:35:57Z
Modified
2026-09-10T03:50:52Z
Severity
  • 6.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N CVSS Calculator
Summary
React Router: RSCErrorHandler Missing Protocol Validation (XSS)
Details

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

Database specific 
{
    "cwe_ids":  [
        "CWE-79"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-07-23T19:35:57Z",
    "nvd_published_at":  null,
    "severity":  "MODERATE"
}
References

Affected packages

npm / react-router

Package

Name
react-router
View open source insights on deps.dev
Purl
pkg:npm/react-router

Affected ranges

Type
SEMVER
Events
Introduced
7.11.0
Fixed
7.18.0

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-h8fp-f39c-q6mh/GHSA-h8fp-f39c-q6mh.json"