{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "0ecb9c48edbf98dc7e934b54fbac43869e64b4cf"
            },
            {
              "last_affected": "0ecb9c48edbf98dc7e934b54fbac43869e64b4cf"
            }
          ],
          "repo": "https://github.com/kagisearch/smallweb",
          "type": "GIT"
        }
      ],
      "versions": [
        "0ecb9c48edbf98dc7e934b54fbac43869e64b4cf"
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulDB",
    "cwe_ids": [
      "CWE-79",
      "CWE-94"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90583.json"
  },
  "details": "A security flaw has been discovered in kagisearch smallweb up to 0ecb9c48edbf98dc7e934b54fbac43869e64b4cf. The affected element is the function index of the file app/sw.py of the component Query String Rendering. Performing a manipulation of the argument qs results in cross site scripting. The attack is possible to be carried out remotely. This product adopts a rolling release strategy to maintain continuous delivery. Therefore, version details for affected or updated releases cannot be specified. The patch is named 00b68144e583f20a6b67e29cf01bc07f57979ffb. It is recommended to apply a patch to fix this issue. Exploitability requires a raw HTTP request carrying unencoded double-quote characters in the query string - Werkzeug's request.query_string returns the raw request-target, and ordinary browsers percent-encode \" as %22, so the payload only lands via netcat/curl-style raw sockets.",
  "id": "CVE-2026-90583",
  "modified": "2026-10-08T02:30:53.803446871Z",
  "published": "2026-09-13T20:00:09.772Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/kagisearch/smallweb/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90583.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90583"
    },
    {
      "type": "ADVISORY",
      "url": "https://vuldb.com/cve/CVE-2026-90583"
    },
    {
      "type": "ADVISORY",
      "url": "https://vuldb.com/submit/913779"
    },
    {
      "type": "ADVISORY",
      "url": "https://vuldb.com/vuln/403168"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/kagisearch/smallweb/issues/854"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/vuln/403168/cti"
    },
    {
      "type": "FIX",
      "url": "https://github.com/kagisearch/smallweb/commit/00b68144e583f20a6b67e29cf01bc07f57979ffb"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X",
      "type": "CVSS_V4"
    }
  ],
  "summary": "kagisearch smallweb Query String Rendering sw.py index cross site scripting"
}