{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:nuxt:nuxt:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "3.1.0"
              },
              {
                "fixed": "3.21.6"
              },
              {
                "introduced": "4.0.0"
              },
              {
                "fixed": "4.4.5"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "c552d1b420caaac0184fd5c332ebc55b0b0d77ad"
            },
            {
              "fixed": "1a8fff351be63bdc639a8b0a2f5a9e74dad240c9"
            },
            {
              "introduced": "8aacdde48e8388c8bb11b9a5c2f59935341bfcfd"
            },
            {
              "fixed": "08f34b5d9f263446354459b6227a8ae0d5ff8e9f"
            }
          ],
          "repo": "https://github.com/nuxt/nuxt",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-g8wj-3cr3-6w7v"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-349",
      "CWE-444",
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46342.json"
  },
  "details": "Nuxt is an open-source web development framework for Vue.js. In Nuxt versions 3.1.0 to before 3.21.6 and 4.0.0-alpha.1 to before 4.4.6 and @nuxt/nitro-server versions 3.20.0 to before 3.21.6 and 4.0.0-alpha.1 to before 4.4.6, the /__nuxt_island/* endpoint accepts attacker-controlled props query/body parameters and renders any island component without verifying that the URL-resident hash (\u003cName\u003e_\u003chashId\u003e.json) was actually issued for those inputs by \u003cNuxtIsland\u003e. The hash is computed and embedded client-side but never validated server-side, so the same path can return materially different responses depending on the query. This issue has been patched in versions 3.21.6 and 4.4.6.",
  "id": "CVE-2026-46342",
  "modified": "2026-08-12T03:51:33.083499203Z",
  "published": "2026-06-12T12:50:41.589Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46342.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/nuxt/nuxt/security/advisories/GHSA-g8wj-3cr3-6w7v"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46342"
    },
    {
      "type": "FIX",
      "url": "https://github.com/nuxt/nuxt/pull/35077"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Nuxt: `__nuxt_island` endpoint does not bind responses to request props, enabling shared-cache poisoning"
}