CVE-2019-10160

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.

Published: 2019-06-07 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-10160 is rated High Risk (75/100): CVSS Critical severity, with high exploitation likelihood (EPSS 5.23%, 91th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +3.75% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2019-10160

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.47% 5.23% +3.75%
2 2026-05-01 1.76% 1.47% -0.29%
3 2026-04-12 — 1.76% —

Full EPSS history (34 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-10160

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
9.8 3.0 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2019-10160

OS Trackers for CVE-2019-10160

vendor priority summary link
debian not yet assigned CVE-2019-10160 not yet assigned priority: Debian including 1 source packages (python2.7), 1 status rows across 1 suites (bullseye): resolved 1. https://security-tracker.debian.org/tracker/CVE-2019-10160
redhat high — https://access.redhat.com/security/cve/CVE-2019-10160
suse high CVE-2019-10160 severity important: SUSE including 538 source package names (0.1.75:libpython3_6m1_0-3.6.8-3.23.1, 0.1.75:python3-3.6.8-3.23.1, …), 1388 product×package rows across 125 product lines (Container caasp/v4/389-ds, Container caasp/v4/hyperkube, … (125 product lines)): Fixed 1215, Known Affected 157, Known Not Affected 16. https://www.suse.com/security/cve/CVE-2019-10160/
ubuntu medium CVE-2019-10160 medium priority: Ubuntu including 5 source packages (python2.7, python3.4, python3.5, python3.6, python3.7), 85 status rows across 17 suites (bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, trusty, upstream, xenial): DNE 59, not-affected 9, released 9, needs-triage 5, ignored 3. https://ubuntu.com/security/CVE-2019-10160

Affected software / configurations for CVE-2019-10160

Vendor Product Version Raw CPE
python python >= 2.7.0, < 2.7.17 cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
python python >= 3.5.0, < 3.5.8 cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
python python >= 3.6.0, < 3.6.9 cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
python python >= 3.7.0, < 3.7.4 cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
python python 3.8.0 cpe:2.3:a:python:python:3.8.0:alpha4:*:*:*:*:*:*
python python 3.8.0 cpe:2.3:a:python:python:3.8.0:beta1:*:*:*:*:*:*
redhat enterprise_linux_desktop 7.0 cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_eus 7.6 cpe:2.3:o:redhat:enterprise_linux_eus:7.6:*:*:*:*:*:*:*
redhat enterprise_linux_server 7.0 cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_server_aus 7.6 cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
redhat enterprise_linux_server_tus 7.6 cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 7.0 cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
opensuse leap 15.0 cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
opensuse leap 15.1 cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
fedoraproject fedora 29 cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
fedoraproject fedora 30 cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
fedoraproject fedora 31 cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
canonical ubuntu_linux 12.04 cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*
canonical ubuntu_linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
canonical ubuntu_linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
canonical ubuntu_linux 18.04 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 19.04 cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
redhat virtualization 4.0 cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:*
netapp cloud_backup — cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
netapp converged_systems_advisor_agent — cpe:2.3:a:netapp:converged_systems_advisor_agent:-:*:*:*:*:*:*:*

References for CVE-2019-10160

URL Tags
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
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