CVE-2021-26119: Debian Linux

High severity, CVSS 7.5. EPSS: 9.4% chance of exploitation in the next 30 days.

Smarty before 3.1.39 allows a Sandbox Escape because $smarty.template_object can be accessed in sandbox mode.

Affected products

• Debian Debian Linux: version 9.0 only; version 10.0 only; version 11.0 only
• Smarty Smarty: before 3.1.39 (fixed in 3.1.39)

Published 2021-02-22. Last modified 2026-06-17.