An OS command injection vulnerability in the app.py component of openlabs docker-wkhtmltopdf-aas up to commit 9f50579 allows attackers to execute arbitrary commands via a crafted POST request.
https://hub.docker.com/r/openlabs/docker-wkhtmltopdf-aas
https://github.com/openlabs/docker-wkhtmltopdf-aas/issues/36