CVE-2018-20213: Libexcel Project Libexcel

High severity, CVSS 7.5. EPSS: 1.1% chance of exploitation in the next 30 days.

wbook_addworksheet in workbook.c in libexcel.a in libexcel 0.01 allows attackers to cause a denial of service (SEGV) via a long name. NOTE: this is not a Microsoft product.

Affected products

• Libexcel Project Libexcel: version 0.01 only

Published 2018-12-18. Last modified 2026-06-17.