CVEvulnerability

CVE-2026-78209

8.4 HIGH Published 2026-08-24 Modified 2026-10-14 Official page ↗
Status
Deferred
Published
2026-08-24
Last modified
2026-10-14
Assigner
[email protected]
CVSS 4.0 ([email protected])
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1 ([email protected])
8.2 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Weaknesses
CWE-1236

Description

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.

Related

Weakness · CWE (1)

  • CWE-1236 Improper Neutralization of Formula Elements in a CSV File weakness

References