CVE-2026-78209 (GCVE-0-2026-78209)
Vulnerability from cvelistv5
Published
2026-08-24 00:30
Modified
2026-08-29 11:47
Severity ?
8.4 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N
8.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
CWE
  • CWE-1236 - Improper Neutralization of Formula Elements in a CSV File
Summary
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.
References
Impacted products
Vendor Product Version
exceljs exceljs Version: 0   ≤ 4.4.0
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