setMarkdown in Qt before 5.14.2 has a use-after-free related to QTextMarkdownImporter::insertBlock.
https://security.gentoo.org/glsa/202007-38
https://codereview.qt-project.org/c/qt/qtbase/+/291706
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=20450
Source: Mitre, NVD
Published: 2020-04-27
Updated: 2023-01-27
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: Critical