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Advisories

ExcelJS through 4.4.0 Formula Injection via Table Totals Row Column Names

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Severity
low
Date
Affecting

  • exceljs <= 4.4.0

CWE
  • CWE-116 Improper Encoding or Escaping of Output
CVSS
2.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Credit
Matéo Florian Callec
Description
ExcelJS through 4.4.0 contains a formula injection vulnerability in the totals row formula getter in lib/doc/table.js that fails to escape [, ], # and ' characters in structured reference column names. Attackers can supply column names containing ] via untrusted input like imported CSV headers to inject formulas such as HYPERLINK that exfiltrate cell values when users open and click the generated workbook.

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