sys.path variable manipulation is possible to load arbitrary modules.
vulners.com/securityvulns/securityvulns:doc:21361
vulners.com/securityvulns/securityvulns:doc:21366
vulners.com/securityvulns/securityvulns:doc:21370
vulners.com/securityvulns/securityvulns:doc:21380
vulners.com/securityvulns/securityvulns:doc:21383
vulners.com/securityvulns/securityvulns:doc:21419
vulners.com/securityvulns/securityvulns:doc:21590