CVE-2023-39928: Debian Linux

High severity, CVSS 8.8. EPSS: 1.4% chance of exploitation in the next 30 days.

A use-after-free vulnerability exists in the MediaRecorder API of Webkit WebKitGTK 2.40.5. A specially crafted web page can abuse this vulnerability to cause memory corruption and potentially arbitrary code execution. A user would need to to visit a malicious webpage to trigger this vulnerability.

Affected products

• Debian Debian Linux: version 11.0 only; version 12.0 only
• Fedoraproject Fedora: version 37 only
• WebKitGTK WebKitGTK: version 2.40.5 only

Published 2023-10-06. Last modified 2026-06-17.