OpenVPN 2.7.8 fixes CVE-2026-84790 (certificates with NULL bytes in the subject are now rejected) and CVE-2026-88964 (unsigned underflow in options), plus Linux DCO races around iroute cleanup and netlink notifications.
Debian has packaged it as debian/2.7.8-1
Bump scripts/package-build/openvpn/package.toml from debian/2.7.7-1.
The carried DCO patch (gerrit 1734) is still needed.