CVE-2019-9740

CVE-2019-9740 describes a CRLF injection vulnerability in the urllib2 module of Python 2.x (through 2.7.16) and the urllib module of Python 3.x (through 3.7.3). An attacker can inject carriage return and line feed characters into HTTP headers or Redis commands by controlling a URL parameter, specifically within the query string. This vulnerability carries a CVSS score of 6.1 (Medium), indicating a network-based attack with low complexity, requiring user interaction, and potentially leading to low confidentiality and integrity impacts. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.