In FreedomBox before 26.15, unprivileged user accounts can read/write files for which they lack permissions by setting the authorized_keys file to be a symlink. NOTE: FreedomBox is a Debian Pure Blend, which means that it distributes its software through Debian repositories.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-118380
https://alioth-lists.debian.net/pipermail/freedombox-discuss/2026-November/010041.html