{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "2.1.0"
              },
              {
                "last_affected": "2.11.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "e51aff2d9562bbfb290ef76a948facb6d4660eff"
            },
            {
              "fixed": "a54c578af309fa81f448143ed2b7a91192cc58a7"
            }
          ],
          "repo": "https://github.com/qax-os/excelize",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-fq3v-74gv-27gm"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-789"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107223.json"
  },
  "details": "Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.1.0 to 2.11.0, flatCols expands file-loaded column ranges without validating Min and Max against the worksheet column limit. SetColWidth reaches flatCols, which expands xlsxCol.Min through xlsxCol.Max without enforcing MaxColumns. When a crafted worksheet supplies an oversized col max attribute and the application invokes a column mutator, flatCols performs a deep copy and append for every attacker-selected column number, allowing an attacker to consume excessive CPU and memory or trigger OOM. No fixed version is available as of this review.",
  "id": "CVE-2026-107223",
  "modified": "2026-10-09T02:30:32.547927437Z",
  "published": "2026-10-07T18:48:54.172Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107223.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/qax-os/excelize/security/advisories/GHSA-fq3v-74gv-27gm"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-107223"
    },
    {
      "type": "FIX",
      "url": "https://github.com/qax-os/excelize/commit/a54c578af309fa81f448143ed2b7a91192cc58a7"
    },
    {
      "type": "FIX",
      "url": "https://github.com/qax-os/excelize/pull/2370"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Excelize: Unbounded \u003ccol max\u003e attribute is loaded with no MaxColumns check and expanded per-column by flatCols(), so any column mutator hangs or OOMs the process"
}