A keystroke logging issue was discovered in Virtual Keyboard in Qt 5.7.x, 5.8.x, 5.9.x, 5.10.x, and 5.11.x before 5.11.3.
https://codereview.qt-project.org/#/c/246630/
https://codereview.qt-project.org/#/c/245640/
https://codereview.qt-project.org/#/c/245638/
https://codereview.qt-project.org/#/c/245312/
https://codereview.qt-project.org/#/c/245293/
https://codereview.qt-project.org/#/c/245283/
https://codereview.qt-project.org/#/c/244845/
https://codereview.qt-project.org/#/c/244687/
https://codereview.qt-project.org/#/c/244569/
https://codereview.qt-project.org/#/c/243666/
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00086.html
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00085.html
http://blog.qt.io/blog/2018/12/04/qt-5-11-3-released-important-security-updates/