Decidim is a participatory democracy framework. In versions from 0.30.0 to before 0.30.4 and from 0.31.0.rc1 to before 0.31.0, the private data exports can lead to data leaks in case the UUID generation, causing collisions for the generated UUIDs. This issue has been patched in versions 0.30.4 and 0.31.0.