{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:nuxt:nuxt:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "3.11.0"
              },
              {
                "fixed": "3.21.7"
              },
              {
                "introduced": "4.0.0"
              },
              {
                "fixed": "4.4.7"
              }
            ],
            "source": [
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "78d5098c28d2e21622961d8b87ef9b4623194fec"
            },
            {
              "fixed": "fd806be61503f6ccad099c070a5d803777ba8a57"
            },
            {
              "introduced": "8aacdde48e8388c8bb11b9a5c2f59935341bfcfd"
            },
            {
              "fixed": "b7d57903b947e788fadfcfdf88be7951943731bf"
            },
            {
              "fixed": "07e39cd6f26e407b4192b7865bd17bc44536b9bb"
            },
            {
              "fixed": "3f3e3fa7b5eec8e495f4f8ce0a54813a8875a11e"
            }
          ],
          "repo": "https://github.com/nuxt/nuxt",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-mm7m-92g8-7m47"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-178",
      "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53721.json"
  },
  "details": "Nuxt is an open-source web development framework for Vue.js. From versions 3.11.0 to before 3.21.7 and 4.0.0 to before 4.4.7, there is a route-rule middleware bypass via case-sensitivity mismatch between vue-router and the routeRules matcher. This issue has been patched in versions 3.21.7 and 4.4.7.",
  "id": "CVE-2026-53721",
  "modified": "2026-07-08T05:38:05.168877106Z",
  "published": "2026-06-12T13:41:34.022Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53721.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/nuxt/nuxt/security/advisories/GHSA-mm7m-92g8-7m47"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53721"
    },
    {
      "type": "FIX",
      "url": "https://github.com/nuxt/nuxt/commit/07e39cd6f26e407b4192b7865bd17bc44536b9bb"
    },
    {
      "type": "FIX",
      "url": "https://github.com/nuxt/nuxt/commit/3f3e3fa7b5eec8e495f4f8ce0a54813a8875a11e"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Nuxt: Route-rule middleware bypass via case-sensitivity mismatch between vue-router and the routeRules matcher"
}