CVE-2018-15518: Debian Linux

High severity, CVSS 8.8. EPSS: 2.5% chance of exploitation in the next 30 days.

QXmlStream in Qt 5.x before 5.11.3 has a double-free or corruption during parsing of a specially crafted illegal XML document.

Affected products

• Debian Debian Linux: version 8.0 only; version 9.0 only
• Opensuse Leap: version 42.3 only
• Qt Qt: from 5.5.0, before 5.11.3 (fixed in 5.11.3)

Published 2018-12-26. Last modified 2026-06-17.