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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| exceljs | exceljs | ≤ 4.4.0 | — |
References
- https://github.com/exceljs/exceljs product
- GitHub Security Advisory (GHSA-m8mg-8574-gm3m) third-party-advisory vendor-advisory
- https://github.com/exceljs/exceljs/blob/v4.4.0/lib/doc/workbook.js#L142-L147 technical-description
- https://github.com/exceljs/exceljs/blob/v4.4.0/lib/xlsx/xlsx.js#L421-L429 technical-description
- VulnCheck Advisory: exceljs through 4.4.0 Path Traversal via Unvalidated addImage filename third-party-advisory