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Vulnerability record · CVE-2019-10160 · published 7 June 2019

CVE-2019-10160: Python insufficiently protected credentials vulnerability

Python · Python

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.

9.8 CVSS 3.1 Critical EPSS 5.2% · top 7.8% CWE-172 · CWE-172CWE-522 · Insufficiently protected credentials
9.8CVSS 3.1 base score, v2 5.0
5.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
14Affected product versions listed by NVD
56References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

14 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00042.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html Mailing ListThird 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 TrackingPatchThird Party Advisory
https://github.com/python/cpython/commit/250b62acc59921d399f0db47db3b462cd6037e09 PatchThird Party Advisory
https://github.com/python/cpython/commit/8d0ef0b5edeae52960c7ed05ae8a12388324f87e PatchThird Party Advisory
https://github.com/python/cpython/commit/f61599b050c621386a3fc6bc480359e2d3bb93de PatchThird Party Advisory
https://github.com/python/cpython/commit/fd1771dbdd28709716bd531580c40ae5ed814468 PatchThird Party Advisory
https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.ap
https://lists.debian.org/debian-lts-announce/2019/06/msg00022.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/08/msg00034.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2ORNTF62QPLMJXIQ7KTZQ27
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/44TS66GJMO5H3RLMVZEBGEF
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4X3HW5JRZ7GCPSR7UHJOLD7
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E2HP37NUVLQSBW3J735A2DQ
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ER6LONC2B2WYIO56GBQUDU6
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HQEQLXLOCR3SNM3AA5RRYJF
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JCPGLTTOBB3QEARDX4JOYUR
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KRYFIMISZ47NTAU3XWZUOFB
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M34WOYCDKTDE5KLUACE2YIE
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NF3DRDGMVIRYNZMSLJIHNW4
https://python-security.readthedocs.io/vuln/urlsplit-nfkc-normalization2.html PatchThird 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 ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html Mailing ListThird 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 TrackingPatchThird Party Advisory
https://github.com/python/cpython/commit/250b62acc59921d399f0db47db3b462cd6037e09 PatchThird Party Advisory
https://github.com/python/cpython/commit/8d0ef0b5edeae52960c7ed05ae8a12388324f87e PatchThird Party Advisory
https://github.com/python/cpython/commit/f61599b050c621386a3fc6bc480359e2d3bb93de PatchThird Party Advisory
https://github.com/python/cpython/commit/fd1771dbdd28709716bd531580c40ae5ed814468 PatchThird Party Advisory
https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.ap
https://lists.debian.org/debian-lts-announce/2019/06/msg00022.html Mailing ListThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2019-10160), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.