net-voip/blink depends on dev-qt/qtwebkit:4 which is ancient and will never see any security updates.
If there's no upstream fix available, it might be time to remove this package.
There's a 3.0.3 release which is ported to PyQt5.
Author: Michał Górny <email@example.com>
AuthorDate: Mon Aug 14 23:18:05 2017
Commit: Michał Górny <firstname.lastname@example.org>
CommitDate: Mon Aug 14 23:24:28 2017
net-voip/blink: Remove last-rited pkg, #575772