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
Downstream
CGA (9)
CLSA (4)
ROOT (1)
Published
2026-07-27T21:21:16Z
Modified
2026-10-21T02:30:18Z
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",
    "cwe_ids":  [
        "CWE-79"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53667.json"
}
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
Fixed
ce596e823f0d7b883a433af1d5a839a8b9fe0242
Database specific
Show details 
{
    "extracted_events":  [
        {
            "cpe":  "cpe:2.3:a:shopify:react-router:*:*:*:*:*:node.js:*:*",
            "range":  [
                {
                    "introduced":  "7.11.0"
                },
                {
                    "fixed":  "7.18.0"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "range":  [
                {
                    "fixed":  "ce596e823f0d7b883a433af1d5a839a8b9fe0242"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "react-router@7.18.0",
            "range":  [
                {
                    "fixed":  "24283e93971e3e4f9f909c0bae63583f173fcd52"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Database specific

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