GHSA-4r6h-8v6p-xvw6HighCVSS 7.8

Prototype Pollution in sheetJS

Published
April 24, 2023
Last Modified
September 19, 2025

🔗 CVE IDs covered (1)

CVE-2023-30533 →

📋 Description

All versions of SheetJS CE through 0.19.2 are vulnerable to "Prototype Pollution" when reading specially crafted files. Workflows that do not read arbitrary files (for example, exporting data to spreadsheet files) are unaffected.

A non-vulnerable version cannot be found via npm, as the repository hosted on GitHub and the npm package xlsx are no longer maintained. Version 0.19.3 can be downloaded via https://cdn.sheetjs.com/.

🎯 Affected products1

  • npm/xlsx:< 0.19.3

🔗 References (7)