CVE-2019-10160: A security regression of CVE-2019-9636 was discovered in python since commit d537ab0ff9767ef024f26246899728f01

This week

CRITICAL 9.8REMOTEWATCHLISTUPGRADEMITIGATEMITIGATE

CVE-2019-10160 is a critical-severity flaw (CVSS 9.8) affecting python, enterprise linux desktop, enterprise linux eus. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Critical severity
EPSS top 7%: very likely to be exploited
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	5.2% (top 7%)
CISA exploited list	No
Weakness	CWE-172, CWE-522
Published	2019-06-07
Last modified	2026-10-14

Publisher (CNA): Red Hat, Inc. · Vendor: python · redhat

Last updated 2026-10-14 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-06-07 18:29 UTCPublished CVE record published
2026-10-14 07:16 UTCUpdated Record last modified

python python UPGRADE

Affected: >= 2.7.0 and < 2.7.17 · >= 3.5.0 and < 3.5.8 · >= 3.6.0 and < 3.6.9 · >= 3.7.0 and < 3.7.4 · 3.8.0 alpha4 · 3.8.0 beta1

Fixed in: 2.7.17, 3.5.8, 3.6.9, 3.7.4

Safe to downgrade to: a release before 2.7.0

1. Check installed version

apt-cache policy python || rpm -q python || python --version

2. UPGRADE to 2.7.17 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade python

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade python

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 2.7.0 (Debian / Ubuntu)

apt-cache madison python sudo apt install python=<VERSION_BEFORE_2.7.0> sudo apt-mark hold python

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list python sudo dnf downgrade python-<VERSION_BEFORE_2.7.0> sudo dnf versionlock add python

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

redhat enterprise linux desktop MITIGATE

Affected: 7.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

redhat enterprise linux eus MITIGATE

Affected: 7.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.6

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

redhat enterprise linux server MITIGATE

Affected: 7.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

redhat enterprise linux server aus MITIGATE

Affected: 7.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.6

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

redhat enterprise linux server tus MITIGATE

Affected: 7.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.6

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-10160?

python: upgrade to 2.7.17, 3.5.8, 3.6.9, 3.7.4; enterprise linux desktop: mitigate or apply the listed mitigation; enterprise linux eus: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-10160 being exploited?

CVE-2019-10160 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-10160 affect?

CVE-2019-10160 affects python, enterprise linux desktop, enterprise linux eus. Severity is critical (CVSS 9.8). 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-20

How urgent is CVE-2019-10160?

Priority 67/100. Critical severity; EPSS top 7%: very likely to be exploited; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Python vulnerabilities

Related CVEs

CVE-2024-9287 HIGH 7.8 UPGRADE A vulnerability has been found in the CPython `venv` module and CLI where path names provided when creating a
CVE-2026-3087 HIGH 7.5 UPGRADE If `shutil.unpack_archive()` is given a ZIP archive with an absolute Windows path containing a drive (`C:\\...
CVE-2026-6019 MEDIUM 6.1 UPGRADE http.cookies.Morsel.js_output() returns an inline <script> snippet and only escapes " for JavaScript string co
CVE-2026-7210 HIGH 7.5 UPGRADE `xml.parsers.expat` and `xml.etree.ElementTree` use insufficient entropy for Expat hash-flooding protection, w
CVE-2026-0864 MEDIUM 5.5 UPGRADE When using the "configparser" module to write configuration files containing multi-line text values with carri

References

← Back to latest CVEs