{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "7.11.0"
              },
              {
                "fixed": "7.18.0"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "b34a9cd1f74231ded97c1e6ca9dff8f09a1b87ca"
            },
            {
              "fixed": "24283e93971e3e4f9f909c0bae63583f173fcd52"
            }
          ],
          "repo": "https://github.com/remix-run/react-router",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-h8fp-f39c-q6mh"
  ],
  "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"
  },
  "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.",
  "id": "CVE-2026-53667",
  "modified": "2026-07-30T03:52:24.629807046Z",
  "published": "2026-07-27T21:21:16.084Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v7180"
    },
    {
      "type": "WEB",
      "url": "https://github.com/remix-run/react-router/releases/tag/react-router@7.18.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53667.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/remix-run/react-router/security/advisories/GHSA-h8fp-f39c-q6mh"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53667"
    },
    {
      "type": "FIX",
      "url": "https://github.com/remix-run/react-router/commit/ce596e823f0d7b883a433af1d5a839a8b9fe0242"
    },
    {
      "type": "FIX",
      "url": "https://github.com/remix-run/react-router/pull/15177"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "React Router: Cross-site Scripting is Possible due to Missing RSCErrorHandler Protocol Validation (Incomplete fix for CVE-2026-53667)"
}