Vulnerabilities in pkg:npm/devalue

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-j22f-vq7h-c4qm",
  "modified" : "2026-10-01T15:18:06Z",
  "published" : "2026-10-01T15:18:06Z",
  "aliases" : [ "CVE-2026-92708" ],
  "summary" : "devalue: `stringify`/`uneval` serialize shared memory",
  "details" : "### Impact\n\n`stringify` and `uneval` serialize a typed array by emitting its backing `ArrayBuffer`, not just the view. In the case of a Node `Buffer` object, the backing buffer is a process-wide shared pool, meaning unrelated memory can be serialized into a response that is then sent to the client. For a Node `Buffer` the backing store is Node's **process-wide shared pool**, so serializing a small `Buffer` copies up to 64 KB of unrelated process memory — including bytes from other in-flight requests — into the output. In an SSR framework (SvelteKit, Nuxt) a public page whose `load()` returns a 2-byte `Buffer`, or a small file read with `readFileSync`, ships another user's request body / `Authorization` header in its HTML. Unauthenticated, silent, ~43,000× amplification.\n\nThis is serialization-side, so the `parse`/`unflatten` prototype-pollution and DoS guards do not apply — it fires on every SSR render, not only when parsing untrusted input.\n\n### Workarounds\n\nConvert Node `Buffer` objects to `Uint8Array`:\n\n```diff\npayload = {\n- buffer\n+ buffer: new Uint8Array(buffer)\n}\n```",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "devalue"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "5.1.0"
      }, {
        "fixed" : "5.9.3"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 5.9.2"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/sveltejs/devalue/security/advisories/GHSA-j22f-vq7h-c4qm"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-92708"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/sveltejs/devalue/commit/46dc877b3570dafb1cd3291b9bb48cecef8f7266"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/sveltejs/devalue"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/sveltejs/devalue/releases/tag/v5.9.3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200", "CWE-226" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-10-01T15:18:06Z",
    "nvd_published_at" : "2026-09-18T20:17:30Z"
  }
}