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Excelize: Unbounded <col max> attribute is loaded with no MaxColumns check and expanded per-column by flatCols(), so any column mutator hangs or OOMs the process

🗓️ 07 Oct 2026 20:22:49Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 4 Views

Unbounded <col max> attribute in Excelize causes DoS or OOM via flatCols().

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