During a system upgrade, installing virtualbox-extpack-oracle-5.2.26 and virtualbox-guest-additions-5.2.26 failed due to certificate error. I fixed the certificate error by adding the following lines to /etc/portage/make.conf FETCHCOMMAND="/usr/bin/wget --no-check-certificate -O \${DISTDIR}/\${FILE} \${URI}" RESUMECOMMAND="/usr/bin/wget -c --no-check-certificate -O \${DISTDIR}/\${FILE} \${URI}" I tried installing them again, and I got the following error HTTP request sent, awaiting response... 403 Forbidden 2019-04-29 17:27:58 ERROR 403: Forbidden. It seems download URIs changed.
Please be more specific. From which URI does the download fail?
Downloads from https://download.virtualbox.org/ fail due to the certificate presented by the server being valid only for download.oracle.com. The download for Virtualbox itself succeeds from Gentoo mirrors. Replacing the domain in SRC_URI with download.oracle.com makes things work.
Just as I suspected. Upstream is aware of the issue and is working on it. We will not change the primary SRC_URI because this is merely a temporary issue.