CVE-2026-78209 exceljs through 4.4.0 CSV Formula Injection via Unescaped Cell Values

exceljs through 4.4.0 fails to neutralize leading equals, plus, minus, or at signs in cell values written to CSV output. Attackers who can influence exported cell values can inject formulas that execute when the CSV file is opened in a spreadsheet application, potentially exfiltrating data or...

CVE-2026-78209 exceljs through 4.4.0 CSV Formula Injection via Unescaped Cell Values

exceljs through 4.4.0 fails to neutralize leading equals, plus, minus, or at signs in cell values written to CSV output. Attackers who can influence exported cell values can inject formulas that execute when the CSV file is opened in a spreadsheet application, potentially exfiltrating data or...

CVE-2026-78209 exceljs through 4.4.0 CSV Formula Injection via Unescaped Cell Values

exceljs through 4.4.0 fails to neutralize leading equals, plus, minus, or at signs in cell values written to CSV output. Attackers who can influence exported cell values can inject formulas that execute when the CSV file is opened in a spreadsheet application, potentially exfiltrating data or...