CVE-2026-53667

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Source
https://cve.org/CVERecord?id=CVE-2026-53667
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53667.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-53667
Aliases
Published
2026-07-27T21:21:16.084Z
Modified
2026-07-30T03:52:24.629807046Z
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: Cross-site Scripting is Possible due to Missing RSCErrorHandler Protocol Validation (Incomplete fix for CVE-2026-53667)
Details

React Router is a router for React. In versions 7.11.0 through 7.17.0, the RSCErrorHandler is missing protocol validation, allowing for redirects from untrusted sources. This issue is a follow up to CVE-2026-53667, and only affects consuming applications if they are using the unstable RSC APIs. This issue has been fixed in version 7.18.0.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53667.json",
    "cwe_ids": [
        "CWE-79"
    ]
}
References

Affected packages

Git / github.com/remix-run/react-router

Affected ranges

Type
GIT
Repo
https://github.com/remix-run/react-router
Events
Introduced
b34a9cd1f74231ded97c1e6ca9dff8f09a1b87ca
Fixed
24283e93971e3e4f9f909c0bae63583f173fcd52
Database specific 
{
    "extracted_events": [
        {
            "introduced": "7.11.0"
        },
        {
            "fixed": "7.18.0"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53667.json"