CVE-2021-27836: Fedoraproject Fedora

Medium severity, CVSS 6.5. EPSS: 1.2% chance of exploitation in the next 30 days.

An issue was discoverered in in function xls_getWorkSheet in xls.c in libxls 1.6.2, allows attackers to cause a denial of service, via a crafted XLS file.

Affected products

• Fedoraproject Fedora: version 33 only; version 34 only; version 35 only
• Libxls Project Libxls: version 1.6.2 only

Published 2021-11-03. Last modified 2026-06-17.