CVE-2019-9891: Tldp Advanced Bash-Scripting Guide

Critical severity, CVSS 9.8. EPSS: 3.4% chance of exploitation in the next 30 days.

The function getopt_simple as described in Advanced Bash Scripting Guide (ISBN 978-1435752184) allows privilege escalation and execution of commands when used in a shell script called, for example, via sudo.

Affected products

• Tldp Advanced Bash-Scripting Guide: any version

Published 2019-05-31. Last modified 2026-06-17.