CVE-2020-15011: Canonical Ubuntu Linux

Medium severity, CVSS 4.3. EPSS: 1.9% chance of exploitation in the next 30 days.

GNU Mailman before 2.1.33 allows arbitrary content injection via the Cgi/private.py private archive login page.

Affected products

• Canonical Ubuntu Linux: version 16.04 only; version 18.04 only
• Debian Debian Linux: version 8.0 only; version 9.0 only; version 10.0 only
• GNU Mailman: before 2.1.33 (fixed in 2.1.33)

Published 2020-06-24. Last modified 2026-06-17.