GHSA-8WC8-HF36-MJH9 File Browser: ScopedFs follows a dangling symlink on write, letting a scoped user create files outside their scope

Summary ScopedFs confines every File Browser user to a scope directory. Its within guard is meant to reject any operation that follows a symbolic link out of that scope. When the link target does not exist yet, the guard walks up to the nearest existing ancestor and validates that instead. For a...