{"id":"CVE-2019-18348","revision":"24548ea86c864232b11109e2cef8e460","records":[{"revision":"24548ea86c864232b11109e2cef8e460","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2019-18348","aliases":[],"title":"An issue was discovered in urllib2 in Python 2.x through 2.7.17 and urllib in Python 3.x through 3.8.0. 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 2.7.17 and urllib in Python 3.x through 3.8.0. 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 host component of a URL) followed by an HTTP header. This is similar to the CVE-2019-9740 query string issue and the CVE-2019-9947 path string issue. (This is not exploitable when glibc has CVE-2016-10739 fixed.). This is fixed in: v2.7.18, v2.7.18rc1; v3.5.10, v3.5.10rc1; v3.6.11, v3.6.11rc1, v3.6.12; v3.7.8, v3.7.8rc1, v3.7.9; v3.8.3, v3.8.3rc1, v3.8.4, v3.8.4rc1, v3.8.5, v3.8.6, v3.8.6rc1.","state":0,"publishedAt":"2019-10-23T16:31:22+00:00","modifiedAt":"2026-10-14T06:54:53.676+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":["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://usn.ubuntu.com/4333-1/","https://usn.ubuntu.com/4333-2/","http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00041.html","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UESGYI5XDAHJBATEZN3MHNDUBDH47AS6/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A5NSAX4SC3V64PGZUPH7PRDLSON34Q5A/","https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html","https://www.oracle.com/security-alerts/cpuoct2020.html","https://bugzilla.redhat.com/show_bug.cgi?id=1727276","https://bugs.python.org/issue30458#msg347282","https://security.netapp.com/advisory/ntap-20191107-0004/"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2019-18348","license":"CVE Program Terms of Use","key":"cve-program:CVE-2019-18348","identifiers":["CVE-2019-18348"]},"retained":false,"historicalAffected":[]}],"coverage":[]}