The summary says it all: 0.5.11 is available upstream
commit 8546d6ecc2f26a455120a399389cb92514db8996 Author: Lars Wendler <polynomial-c@gentoo.org> Date: Fri Sep 25 11:47:47 2015 www-client/midori: Bump to version 0.5.11 (bug #560824). Package-Manager: portage-2.2.22 Signed-off-by: Lars Wendler <polynomial-c@gentoo.org>