CVE-2026-78208
High
Description
exceljs through 4.4.0 contains a path traversal vulnerability in the Workbook.addImage() function that fails to validate file paths. Attackers can supply arbitrary file paths to read any file accessible to the Node.js process and embed it in the generated workbook.
SeverityHigh
CVSS7.5
Exploit probability—
ProductExceljs
PublishedAug 24, 2026
First seenAug 24, 2026
Weakness typeCWE-73CWE-73
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| exceljs exceljs | v ≤ 4.4.0 | — |
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