Qt 5.15.15 is released on 31 August 2023. It fixes some 13 security issues [1].
[1] https://github.com/qt/qtwebengine-chromium/compare/18c9261dc5b8aa57a0bdd5b62ce6f648cca1ef5e...8df91f886e7fffb61408e2426f8a90d763a3b6ea
Fixes: #10 (closed)