{"id":"CVE-2019-9636","revision":"bd676a6e6cb54d7f97534686cf2a60ca","records":[{"revision":"bd676a6e6cb54d7f97534686cf2a60ca","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2019-9636","aliases":[],"title":"Python 2.7.x through 2.7.16 and 3.x through 3.7.2 is affected by: Improper Handling of Unicode Encoding (with an incorrect netloc) during NFKC normalization. The impact is: Information disclosure (credentials, cookies, etc. that are cached …","description":"Python 2.7.x through 2.7.16 and 3.x through 3.7.2 is affected by: Improper Handling of Unicode Encoding (with an incorrect netloc) during NFKC normalization. The impact is: Information disclosure (credentials, cookies, etc. that are cached against a given hostname). The components are: urllib.parse.urlsplit, urllib.parse.urlparse. The attack vector is: A specially crafted URL could be incorrectly parsed to locate cookies or authentication data and send that information to a different host than when parsed correctly. This is fixed in: v2.7.17, v2.7.17rc1, v2.7.18, v2.7.18rc1; v3.5.10, v3.5.10rc1, v3.5.7, 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; v3.7.3, v3.7.3rc1, 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":"2019-03-08T21:00:00+00:00","modifiedAt":"2026-10-14T06:49:39.823+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/107400","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L25RTMKCF62DLC2XVSNXGX7C7HXISLVM/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JSKPGPZQNTAULHW4UH63KGOOUIDE4RRB/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D3LXPABKVLFYUHRYJPM3CSS5MS6FXKS7/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AEZ5IQT7OF7Q2NCGIVABOWYGKO7YU3NJ/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ICBEGRHIPHWPG2VGYS6R4EVKVUUF4AQW/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TR6GCO3WTV4D5L23WTCBF275VE6BVNI3/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/46PVWY5LFP4BRPG3BVQ5QEEFYBVEXHCK/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CFBAAGM27H73OLYBUA2IAZFSUN6KGLME/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IFAXBEY2TGOBDRKTR556JBXBVFSAKD6I/","https://access.redhat.com/errata/RHSA-2019:0710","https://access.redhat.com/errata/RHSA-2019:0765","https://access.redhat.com/errata/RHSA-2019:0806","http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00092.html","http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00097.html","https://access.redhat.com/errata/RHSA-2019:0902","https://access.redhat.com/errata/RHSA-2019:0981","https://access.redhat.com/errata/RHSA-2019:0997","https://access.redhat.com/errata/RHBA-2019:0959","http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00024.html","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JXASHCDD4PQFKTMKQN4YOP5ZH366ABN4/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JMWSKTNOHSUOT3L25QFJAVCFYZX46FYK/","https://access.redhat.com/errata/RHSA-2019:1467","http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00050.html","https://lists.debian.org/debian-lts-announce/2019/06/msg00022.html","https://lists.debian.org/debian-lts-announce/2019/06/msg00023.html","https://access.redhat.com/errata/RHBA-2019:0764","https://access.redhat.com/errata/RHBA-2019:0763","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://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KRYFIMISZ47NTAU3XWZUOFB7CYL62KES/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HQEQLXLOCR3SNM3AA5RRYJFQ5AZBYJ4L/","http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00042.html","https://usn.ubuntu.com/4127-2/","https://usn.ubuntu.com/4127-1/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ER6LONC2B2WYIO56GBQUDU6QTWZDPUNQ/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E2HP37NUVLQSBW3J735A2DQDOZ4ZGBLY/","https://access.redhat.com/errata/RHSA-2019:2980","https://access.redhat.com/errata/RHSA-2019:3170","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/","http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html","https://security.gentoo.org/glsa/202003-26","https://www.oracle.com/security-alerts/cpujan2020.html","https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html","https://lists.debian.org/debian-lts-announce/2020/08/msg00034.html","https://www.oracle.com/security-alerts/cpujul2022.html","https://github.com/python/cpython/pull/12201","https://python-security.readthedocs.io/vuln/urlsplit-nfkc-normalization.html","https://bugs.python.org/issue36216","https://security.netapp.com/advisory/ntap-20190517-0001/"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2019-9636","license":"CVE Program Terms of Use","key":"cve-program:CVE-2019-9636","identifiers":["CVE-2019-9636"]},"retained":false,"historicalAffected":[]}],"coverage":[]}