This bug was fixed in the package qtbase-opensource-src - 5.12.2+dfsg-4ubuntu1.1
--------------- qtbase-opensource-src (5.12.2+dfsg-4ubuntu1.1) disco; urgency=medium
* Backport upstream patch to fix nullptr dereference in HTTP handler (LP: #1833536).
-- Dmitry Shachnev <email address hidden> Tue, 25 Jun 2019 13:23:10 +0300
This bug was fixed in the package qtbase- opensource- src - 5.12.2+ dfsg-4ubuntu1. 1
--------------- opensource- src (5.12.2+ dfsg-4ubuntu1. 1) disco; urgency=medium
qtbase-
* Backport upstream patch to fix nullptr dereference in HTTP handler
(LP: #1833536).
-- Dmitry Shachnev <email address hidden> Tue, 25 Jun 2019 13:23:10 +0300