CVE-2020-10018: Canonical Ubuntu Linux

Critical severity, CVSS 9.8. EPSS: 5% chance of exploitation in the next 30 days.

WebKitGTK through 2.26.4 and WPE WebKit through 2.26.4 (which are the versions right before 2.28.0) contains a memory corruption issue (use-after-free) that may lead to arbitrary code execution. This issue has been fixed in 2.28.0 with improved memory handling.

Affected products

• Canonical Ubuntu Linux: version 18.04 only; version 19.10 only
• Debian Debian Linux: version 10.0 only
• Fedoraproject Fedora: version 30 only; version 31 only
• Opensuse Leap: version 15.1 only
• WebKitGTK WebKitGTK: before 2.28.0 (fixed in 2.28.0)
• Wpewebkit Wpe Webkit: before 2.28.0 (fixed in 2.28.0)

Published 2020-03-02. Last modified 2026-06-17.