uWSGI before 2.0.17 mishandles a DOCUMENT_ROOT check during use of the --php-docroot option, allowing directory traversal.
https://www.exploit-db.com/exploits/44223/
https://www.debian.org/security/2018/dsa-4142
https://uwsgi-docs.readthedocs.io/en/latest/Changelog-2.0.17.html