{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "2.38.0"
              },
              {
                "fixed": "2.60.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "54e10cf07ab2bf06c6ec6d2ea225c34936c5d2e8"
            },
            {
              "fixed": "d0204067efe97ac2199845ca6fe54cce62f3f5de"
            }
          ],
          "repo": "https://github.com/sveltejs/kit",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-hgv7-v322-mmgr"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-362"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82258.json"
  },
  "details": "SvelteKit versions from 2.38.0 before 2.60.1 contain a race condition in query.batch that allows concurrent requests from different users to merge under a single request context. Attackers can exploit specific timing conditions to access sensitive data from other users' concurrent requests.",
  "id": "CVE-2026-82258",
  "modified": "2026-09-01T03:30:30.608881117Z",
  "published": "2026-08-28T10:49:42.085Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82258.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/sveltejs/kit/security/advisories/GHSA-hgv7-v322-mmgr"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-82258"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/sveltekit-2.38.0-before-2.60.1-cross-user-data-disclosure-via-query-batch"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "SvelteKit 2.38.0 before 2.60.1 Cross-User Data Disclosure via query.batch"
}