CVE-2026-107223High· 7.1▾ TwilightExcelize 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 reach…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 39.1 · likelihood 0 · exploitation 0
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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.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
github.com/xuri/excelize/v2 >= 2.1.0, < 2.11.1-0.20260807015645-a54c578af309Patched in:
github.com/xuri/excelize/v2 2.11.1-0.20260807015645-a54c578af309Connected by shared product, vendor, weakness, or advisory.
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