Critical (9.8) in ftpd project ftpd. EPSS 3.6% chance of exploitation in the next 30 days. Fixed in ftpd 0.2.2.
The ftpd gem 0.2.1 for Ruby allows remote attackers to execute arbitrary OS commands via shell metacharacters in a LIST or NLST command argument within FTP protocol traffic.
Severity
CVSS 3.1
9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
3.6% chance of exploitation in the next 30 days; higher than 89% of CVEs (scores of 2026-10-31)