Core 26 base snap20260925

Core 26 base snap supplies the runtime environment that snap applications use to access shared libraries and dependencies, giving them a common execution foundation. It addresses the need for dependent snaps to define a separate base for the same components, allowing them to rely on core26 instead. Canonical publishes this System Tools software under a freeware license.

The environment is based on Ubuntu 26.04 LTS, also known as Resolute Raccoon, and provides shared components used by many applications. Users encounter it when installed snap applications require the core26 runtime, while snap developers use it to select a base environment for packages they create. Developers choose it by adding base: core26 to a snap’s snapcraft.yaml file.

A snap that declares this dependency installs the base snap automatically, and only one base snap of each type is installed at a time. Manually removing one can affect the stability of dependent snap applications. Current version 20260925 requires Linux with snapd and supports amd64, arm64, armhf, ppc64el, riscv64, and s390x architectures.