An arbitrary file upload vulnerability in the file upload component of ButterCMS v1.2.8 allows attackers to execute arbitrary code via a crafted SVG file.
https://github.com/advisories/GHSA-3v5x-qjrp-q2hq
https://www.youtube.com/watch?v=Tw8OhtVd-mE
https://share.getcloudapp.com/nOuR70WB