{"id":"CVE-2019-9740","revision":"c5c049e24b7a4e1ba6465932e3f6dca4","records":[{"revision":"c5c049e24b7a4e1ba6465932e3f6dca4","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2019-9740","aliases":[],"title":"An issue was discovered in urllib2 in Python 2.x through 2.7.16 and urllib in Python 3.x through 3.7.3. CRLF injection is possible if the attacker controls a url parameter, as demonstrated by the first argument to urllib.request.urlopen wit…","description":"An issue was discovered in urllib2 in Python 2.x through 2.7.16 and urllib in Python 3.x through 3.7.3. CRLF injection is possible if the attacker controls a url parameter, as demonstrated by the first argument to urllib.request.urlopen with \\r\\n (specifically in the query string after a ? character) followed by an HTTP header or a Redis command. This is fixed in: v2.7.17, v2.7.17rc1, v2.7.18, v2.7.18rc1; v3.5.10, v3.5.10rc1, v3.5.8, v3.5.8rc1, v3.5.8rc2, v3.5.9; v3.6.10, v3.6.10rc1, v3.6.11, v3.6.11rc1, v3.6.12, v3.6.9, v3.6.9rc1; v3.7.4, v3.7.4rc1, v3.7.4rc2, v3.7.5, v3.7.5rc1, v3.7.6, v3.7.6rc1, v3.7.7, v3.7.7rc1, v3.7.8, v3.7.8rc1, v3.7.9.","state":0,"publishedAt":"2019-03-13T03:00:00+00:00","modifiedAt":"2026-10-14T06:49:42.941+00:00","affected":[{"ecosystem":"Vendor product","name":"n/a","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"n/a\",\n                    \"vendor\": \"n/a\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"n/a\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["http://www.securityfocus.com/bid/107466","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JXASHCDD4PQFKTMKQN4YOP5ZH366ABN4/","https://access.redhat.com/errata/RHSA-2019:1260","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JMWSKTNOHSUOT3L25QFJAVCFYZX46FYK/","https://lists.debian.org/debian-lts-announce/2019/06/msg00022.html","https://lists.debian.org/debian-lts-announce/2019/06/msg00023.html","https://lists.debian.org/debian-lts-announce/2019/06/msg00026.html","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/44TS66GJMO5H3RLMVZEBGEFTB6O2LJJU/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2ORNTF62QPLMJXIQ7KTZQ2776LMIXEKL/","https://access.redhat.com/errata/RHSA-2019:2030","https://usn.ubuntu.com/4127-2/","http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00039.html","http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00041.html","https://usn.ubuntu.com/4127-1/","https://seclists.org/bugtraq/2019/Oct/29","https://access.redhat.com/errata/RHSA-2019:3335","https://access.redhat.com/errata/RHSA-2019:3520","https://access.redhat.com/errata/RHSA-2019:3725","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M34WOYCDKTDE5KLUACE2YIEH7D37KHRX/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JCPGLTTOBB3QEARDX4JOYURP6ELNNA2V/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4X3HW5JRZ7GCPSR7UHJOLD7AWLTQCDVR/","https://security.gentoo.org/glsa/202003-26","https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html","https://lists.debian.org/debian-lts-announce/2020/08/msg00034.html","http://packetstormsecurity.com/files/154927/Slackware-Security-Advisory-python-Updates.html","http://www.openwall.com/lists/oss-security/2021/02/04/2","https://www.oracle.com/security-alerts/cpujul2022.html","https://bugs.python.org/issue36276","https://security.netapp.com/advisory/ntap-20190619-0005/"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2019-9740","license":"CVE Program Terms of Use","key":"cve-program:CVE-2019-9740","identifiers":["CVE-2019-9740"]},"retained":false,"historicalAffected":[]}],"coverage":[]}