{"api_version":"1","generated_at":"2026-07-11T19:33:02+00:00","cve":"CVE-2026-54063","urls":{"html":"https://cve.report/CVE-2026-54063","api":"https://cve.report/api/cve/CVE-2026-54063.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-54063","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-54063"},"summary":{"title":"Excelize: Unbounded Row Index Allocation in Worksheet Parser (checkSheet OOM/Panic DoS)","description":"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 <row r=\"N\"> 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. 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Prior to 2.11.0, the checkSheet() function in github.com/xuri/excelize/v2 uses an attacker-controlled <row r=\"N\"> 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.","Type":"Description","Title":"Excelize: Unbounded Row Index Allocation in Worksheet Parser (ch"}]}}}