{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2.53.2"
      },
      "package": {
        "ecosystem": "npm",
        "name": "@sveltejs/kit"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.49.0"
            },
            {
              "fixed": "2.53.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-28T02:04:39Z",
    "nvd_published_at": null,
    "severity": "LOW"
  },
  "details": "Some relatively small inputs can cause very large files arrays in `form` handlers. If the SvelteKit application code doesn\u0027t check `files.length` or individual files\u0027 sizes and performs expensive processing with them, it can result in Denial of Service.\n\nOnly users with `experimental.remoteFunctions: true` who are using the `form` function and are processing the `files` array without validation are vulnerable.",
  "id": "GHSA-fpg4-jhqr-589c",
  "modified": "2026-02-28T02:04:39Z",
  "published": "2026-02-28T02:04:39Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/sveltejs/kit/security/advisories/GHSA-fpg4-jhqr-589c"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sveltejs/kit/commit/faba869db3644077169bf5d7c6e41fd5f3d6c65e"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/sveltejs/kit"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sveltejs/kit/releases/tag/@sveltejs/kit@2.53.3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U",
      "type": "CVSS_V4"
    }
  ],
  "summary": "SvelteKit  has deserialization expansion in unvalidated `form` remote function leading to Denial of Service (experimental only)"
}