2026.4-beta1

This release is for desktop only.

Here is a list of all changes since last release 2026.3:

Added

• Add Ukrainian as a new language in the app.
• installer-downloader logs are aggregated by mullvad-problem-report.

Changed

• Update gotatun to 0.8.1.

Windows

• Update wireguard-nt to version 1.1. This retires the Mullvad fork at
  https://github.com/mullvad/wireguard-nt.

macOS

• Use arch-specific installers to deliver updates. This makes updates around 50% smaller.

Fixed

• Align ciphers for custom shadowsocks API access methods between clients and mullvad-daemon. Any
  existing, invalid access method is removed with a settings migration.

Linux

• Fix issue where gotatun would fail to start on Linux systems where the
  IPv6 stack had been disabled.

Windows

• Fix misleading "split tunneling" error when offline.
• Fix unhandled error: "Reached the end of the file. (os error 38)"

Security

• Linux and macOS: Fix management interface socket being created with less restrictive permissions
  when using MULLVAD_MANAGEMENT_SOCKET_GROUP. This addresses the advisory GHSA-p9rr-wc9m-qmwg.

Linux

• Plug hole in Custom DNS firewall rules for LAN resolvers.