CVE-2020-8161: Canonical Ubuntu Linux

High severity, CVSS 8.6. EPSS: 3.4% chance of exploitation in the next 30 days.

A directory traversal vulnerability exists in rack < 2.2.0 that allows an attacker perform directory traversal vulnerability in the Rack::Directory app that is bundled with Rack which could result in information disclosure.

Affected products

• Canonical Ubuntu Linux: version 18.04 only
• Debian Debian Linux: version 9.0 only; version 10.0 only
• Rack Project Rack: before 2.2.0 (fixed in 2.2.0)

Published 2020-07-02. Last modified 2026-06-17.