CVE-2019-9948: Canonical Ubuntu Linux

Critical severity, CVSS 9.1. EPSS: 11.8% chance of exploitation in the next 30 days.

urllib in Python 2.x through 2.7.16 supports the local_file: scheme, which makes it easier for remote attackers to bypass protection mechanisms that blacklist file: URIs, as demonstrated by triggering a urllib.urlopen('local_file:///etc/passwd') call.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 16.04 only; version 18.04 only; version 19.04 only
• Debian Debian Linux: version 8.0 only; version 9.0 only
• Fedoraproject Fedora: version 29 only; version 30 only
• Opensuse Leap: version 15.0 only; version 42.3 only
• Python Python: from 2.0, before 2.7.17 (fixed in 2.7.17); from 3.5.0, before 3.5.8 (fixed in 3.5.8); from 3.6.0, before 3.6.9 (fixed in 3.6.9); from 3.7.0, before 3.7.4 (fixed in 3.7.4)
• Red Hat Enterprise Linux Desktop: version 7.0 only; version 8.0 only
• Red Hat Enterprise Linux Eus: version 8.1 only; version 8.2 only; version 8.4 only; version 8.6 only
• Red Hat Enterprise Linux Server: version 7.0 only; version 8.0 only
• Red Hat Enterprise Linux Server Eus: version 8.4 only
• Red Hat Enterprise Linux Tus: version 8.2 only; version 8.4 only; version 8.6 only
• Red Hat Enterprise Linux Workstation: version 7.0 only; version 8.0 only

Published 2019-03-23. Last modified 2026-10-07.