HIGHVulnerability
CVE-2026-78209
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.
Properties
- severity
- HIGH
- score
- 8.2
- cve_id
- CVE-2026-78209
- vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
- published_at
- 2026-08-24T01:16:58.423
- last_modified
- 2026-08-31T20:52:56.343
Related Entities (2)
DESCRIBED_BY (1)
→[Source]NVD
HAS_WEAKNESS (1)
→[Weakness]Improper Neutralization of Formula Elements in a CSV File
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