urllib3 before 1.25.9 allows CRLF injection if the attacker controls the HTTP request method, as demonstrated by inserting CR and LF control characters in the first argument of putrequest(). NOTE: this is similar to CVE-2020-26116.
"https://github.com/pypa/advisory-database/blob/main/vulns/urllib3/PYSEC-2020-148.yaml"