CVE-2018-15120: Canonical Ubuntu Linux

Medium severity, CVSS 6.5. EPSS: 11.5% chance of exploitation in the next 30 days.

libpango in Pango 1.40.8 through 1.42.3, as used in hexchat and other products, allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via crafted text with invalid Unicode sequences.

Affected products

• Canonical Ubuntu Linux: version 18.04 only
• Gnome Pango: from 1.40.8, up to and including 1.42.3

Published 2018-08-24. Last modified 2026-06-17.