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CVE-2026-78209

exceljs through 4.4.0 CSV Formula Injection via Unescaped Cell Values PUBLISHED

Description (CNA)

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 performing other malicious actions.

Affected (CNA)

Vendor / productVersions
exceljs / exceljsaffected 0 through 4.4.0

CWE

CWE-1236

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.