{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:excelize:excelize:*:*:*:*:*:go:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.11.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "90ff348959dd842cbf3a4fbd93a78afbe18db476"
            }
          ],
          "repo": "https://github.com/qax-os/excelize",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-h69g-9hx6-f3v4"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54063.json"
  },
  "details": "Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. Prior to 2.11.0, the checkSheet() function in github.com/xuri/excelize/v2 uses an attacker-controlled \u003crow r=\"N\"\u003e XML attribute value directly as the length argument to make([]xlsxRow, row) without validating it against the Excel row limit (TotalRows = 1,048,576). A specially crafted XLSX file can trigger two denial-of-service variants: (A) an out-of-memory process kill when r=2147483647 forces a ~16 GB allocation attempt, and (B) a runtime panic via out-of-bounds slice indexing when r=-1. Any service that opens attacker-supplied XLSX files and calls GetCellValue is affected. No authentication is required. This issue is fixed in version 2.11.0.",
  "id": "CVE-2026-54063",
  "modified": "2026-07-18T03:41:57.625472420Z",
  "published": "2026-07-10T15:53:31.020Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/qax-os/excelize/releases/tag/v2.11.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54063.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/qax-os/excelize/security/advisories/GHSA-h69g-9hx6-f3v4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54063"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Excelize: Unbounded Row Index Allocation in Worksheet Parser (checkSheet OOM/Panic DoS)"
}