CVE-2024-56364: Shuchkin Simplexlsx

Medium severity, CVSS 5.4. EPSS: 0.3% chance of exploitation in the next 30 days.

SimpleXLSX is software for parsing and retrieving data from Excel XLSx files. Starting in 1.0.12 and ending in 1.1.13, when calling the extended toHTMLEx method, it is possible to execute arbitrary JavaScript code. This vulnerability is fixed in 1.1.13.

Affected products

• Shuchkin Simplexlsx: from 1.0.12, before 1.1.13 (fixed in 1.1.13)

Published 2024-12-23. Last modified 2026-06-17.