A security regression of CVE-2019-9636 was discovered in python since commit d537ab0ff9767ef024f26246899728f0116b1ec3 affecting versions 2.7, 3.5, 3.6, 3.7 and from v3.8.0a4 through v3.8.0b1, which still allows an attacker to exploit CVE-2019-9636 by abusing the user and password parts of a URL. When an application parses user-supplied URLs to store cookies, authentication credentials, or other kind of information, it is possible for an attacker to provide specially crafted URLs to make the application locate host-related information (e.g. cookies, authentication data) and send them to a different host than where it should, unlike if the URLs had been correctly parsed. The result of an attack may vary based on the application.
Fix
Patch, vendor advisory and mitigation references on NVD 12
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10160 Issue Tracking, Patch, Third Party Advisory
- https://github.com/python/cpython/commit/250b62acc59921d399f0db47db3b462cd6037e09 Patch, Third Party Advisory
- https://github.com/python/cpython/commit/8d0ef0b5edeae52960c7ed05ae8a12388324f87e Patch, Third Party Advisory
- https://github.com/python/cpython/commit/f61599b050c621386a3fc6bc480359e2d3bb93de Patch, Third Party Advisory
- https://github.com/python/cpython/commit/fd1771dbdd28709716bd531580c40ae5ed814468 Patch, Third Party Advisory
- https://python-security.readthedocs.io/vuln/urlsplit-nfkc-normalization2.html Patch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10160 Issue Tracking, Patch, Third Party Advisory
- https://github.com/python/cpython/commit/250b62acc59921d399f0db47db3b462cd6037e09 Patch, Third Party Advisory
- https://github.com/python/cpython/commit/8d0ef0b5edeae52960c7ed05ae8a12388324f87e Patch, Third Party Advisory
- https://github.com/python/cpython/commit/f61599b050c621386a3fc6bc480359e2d3bb93de Patch, Third Party Advisory
- https://github.com/python/cpython/commit/fd1771dbdd28709716bd531580c40ae5ed814468 Patch, Third Party Advisory
- https://python-security.readthedocs.io/vuln/urlsplit-nfkc-normalization2.html Patch, Third Party Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 9.8 · python, redhat, debianNVD modified 2026-10-14 07:16
Affected (CPE criteria) 24
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*cpe:2.3:a:python:python:3.8.0:alpha4:*:*:*:*:*:*cpe:2.3:a:python:python:3.8.0:beta1:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_eus:7.6:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:*cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*cpe:2.3:a:netapp:converged_systems_advisor_agent:-:*:*:*:*:*:*:*
References 57
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00042.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html Mailing List, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1587 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1700 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2437 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10160 Issue Tracking, Patch, Third Party Advisory
- https://github.com/python/cpython/commit/250b62acc59921d399f0db47db3b462cd6037e09 Patch, Third Party Advisory
- https://github.com/python/cpython/commit/8d0ef0b5edeae52960c7ed05ae8a12388324f87e Patch, Third Party Advisory
- https://github.com/python/cpython/commit/f61599b050c621386a3fc6bc480359e2d3bb93de Patch, Third Party Advisory
- https://github.com/python/cpython/commit/fd1771dbdd28709716bd531580c40ae5ed814468 Patch, Third Party Advisory
- https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2019/06/msg00022.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/08/msg00034.html Mailing List, Third Party Advisory
- 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/44TS66GJMO5H3RLMVZEBGEFTB6O2LJJU/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4X3HW5JRZ7GCPSR7UHJOLD7AWLTQCDVR/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E2HP37NUVLQSBW3J735A2DQDOZ4ZGBLY/
- 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/HQEQLXLOCR3SNM3AA5RRYJFQ5AZBYJ4L/
- 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/KRYFIMISZ47NTAU3XWZUOFB7CYL62KES/
- 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/NF3DRDGMVIRYNZMSLJIHNW47HOUQYXVG/
- https://python-security.readthedocs.io/vuln/urlsplit-nfkc-normalization2.html Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20190617-0003/ Third Party Advisory
- https://usn.ubuntu.com/4127-1/ Third Party Advisory
- https://usn.ubuntu.com/4127-2/ Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00042.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html Mailing List, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1587 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1700 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2437 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10160 Issue Tracking, Patch, Third Party Advisory
- https://github.com/python/cpython/commit/250b62acc59921d399f0db47db3b462cd6037e09 Patch, Third Party Advisory
- https://github.com/python/cpython/commit/8d0ef0b5edeae52960c7ed05ae8a12388324f87e Patch, Third Party Advisory
- https://github.com/python/cpython/commit/f61599b050c621386a3fc6bc480359e2d3bb93de Patch, Third Party Advisory
- https://github.com/python/cpython/commit/fd1771dbdd28709716bd531580c40ae5ed814468 Patch, Third Party Advisory
- https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2019/06/msg00022.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/08/msg00034.html Mailing List, Third Party Advisory
- 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/44TS66GJMO5H3RLMVZEBGEFTB6O2LJJU/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4X3HW5JRZ7GCPSR7UHJOLD7AWLTQCDVR/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E2HP37NUVLQSBW3J735A2DQDOZ4ZGBLY/
- 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/HQEQLXLOCR3SNM3AA5RRYJFQ5AZBYJ4L/
- 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/KRYFIMISZ47NTAU3XWZUOFB7CYL62KES/
- 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/NF3DRDGMVIRYNZMSLJIHNW47HOUQYXVG/
- https://python-security.readthedocs.io/vuln/urlsplit-nfkc-normalization2.html Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20190617-0003/ Third Party Advisory
- https://usn.ubuntu.com/4127-1/ Third Party Advisory
- https://usn.ubuntu.com/4127-2/ Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html