NVD / CVE Program· CNA mitre

CVE-2019-20916: The pip package before 19.2 for Python allows Directory Traversal when a URL is given in an install command, because a Content-Disposition h

Noroxi assessment

Priority: Monitor (action score 31/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 3% (FIRST EPSS); higher than 87.2% of all records.
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
Fixed version: python-psycopg2-doc (AlmaLinux:8) 2.7.5-7.module_el8.6.0+2781+fed64c13; python-sqlalchemy-doc (AlmaLinux:8) 1.3.2-2.module_el8.6.0+2781+fed64c13, 1.3.2-2.module_el8.5.0+2569+5c5719bc; python2-attrs (AlmaLinux:8) 17.4.0-10.module_el8.6.0+2781+fed64c13.
Mentioned 3 times in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to python-psycopg2-doc (AlmaLinux:8) 2.7.5-7.module_el8.6.0+2781+fed64c13; python-sqlalchemy-doc (AlmaLinux:8) 1.3.2-2.module_el8.6.0+2781+fed64c13, 1.3.2-2.module_el8.5.0+2569+5c5719bc; python2-attrs (AlmaLinux:8) 17.4.0-10.module_el8.6.0+2781+fed64c13 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

The pip package before 19.2 for Python allows Directory Traversal when a URL is given in an install command, because a Content-Disposition header can have ../ in a filename, as demonstrated by overwriting the /root/.ssh/authorized_keys file. This occurs in _download_http_url in _internal/download.py.

HighCVSS 7.5 · v3.1—No exploit Fix available

Published: Sep 4, 2020
Updated: Jun 16, 2026
EPSS: 3.0% · 87th percentile
CWE: CWE-22

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Action score

Monitor

Low priority for now.

CVSS: 30 / 40 · 7.5 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 1 / 30 · 3.0%

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
pypa	pip	cpe:2.3:a:pypa:pip
opensuse	leap	cpe:2.3:o:opensuse:leap
debian	debian linux	cpe:2.3:o:debian:debian_linux
oracle	communications cloud native core network function cloud native environment	cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment
oracle	communications cloud native core policy	cpe:2.3:a:oracle:communications_cloud_native_core_policy

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

debian debian linux9.0
opensuse leap15.1
opensuse leap15.2
oracle communications cloud native core network function cloud native environment1.10.0
oracle communications cloud native core network function cloud native environment22.1.0
oracle communications cloud native core policy1.15.0
pypa pipbefore 19.2

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

+96

Same product

pypa: all records

Other highest-scoring records for the same primary product.

CVE-2018-20225An issue was discovered in pip (all versions) because it installs the version with the highest version number, even if the user had intended
32Monitor
CVE-2013-1629pip before 1.3 uses HTTP to retrieve packages from the PyPI repository, and does not perform integrity checks on package contents, which all
29Monitor
CVE-2013-5123The mirroring support (-M, --use-mirrors) in Python Pip before 1.5 uses insecure DNS querying and authenticity checks which allows attackers
25Monitor

Published before and after this one in the same product

← EarlierCVE-2013-1888Aug 17, 2013 · pip before 1.3 allows local users to overwrite arbitrary files via a symlink attack on a file in the /tmp/pip-build temporary directory.
8Monitor
← EarlierCVE-2014-8991Nov 24, 2014 · pip 1.3 through 1.5.6 allows local users to cause a denial of service (prevention of package installation) by creating a /tmp/pip-build-* fi
8Monitor
Later →CVE-2021-3572Nov 10, 2021 · A flaw was found in python-pip in the way it handled Unicode separators in git references.
23Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
almalinux:python-psycopg2-doc	2.7.5-7.module_el8.6.0+2781+fed64c13 · AlmaLinux:8	Package registry (OSV)
almalinux:python-sqlalchemy-doc	1.3.2-2.module_el8.6.0+2781+fed64c13 · AlmaLinux:8	Package registry (OSV)
almalinux:python2-attrs	17.4.0-10.module_el8.6.0+2781+fed64c13 · AlmaLinux:8	Package registry (OSV)
almalinux:python2-chardet	3.0.4-10.module_el8.6.0+2781+fed64c13 · AlmaLinux:8	Package registry (OSV)
almalinux:python2-coverage	4.5.1-4.module_el8.6.0+2781+fed64c13 · AlmaLinux:8	Package registry (OSV)
almalinux:python2-Cython	0.28.1-7.module_el8.6.0+2781+fed64c13 · AlmaLinux:8	Package registry (OSV)
almalinux:python2-dns	1.15.0-10.module_el8.6.0+2781+fed64c13 · AlmaLinux:8	Package registry (OSV)
almalinux:python2-docs	2.7.16-2.module_el8.6.0+2781+fed64c13 · AlmaLinux:8	Package registry (OSV)
almalinux:python2-docs-info	2.7.16-2.module_el8.6.0+2781+fed64c13 · AlmaLinux:8	Package registry (OSV)
almalinux:python2-docutils	0.14-12.module_el8.6.0+2781+fed64c13 · AlmaLinux:8	Package registry (OSV)
almalinux:python2-funcsigs	1.0.2-13.module_el8.6.0+2781+fed64c13 · AlmaLinux:8	Package registry (OSV)
almalinux:python2-PyMySQL	0.8.0-10.module_el8.6.0+2781+fed64c13 · AlmaLinux:8	Package registry (OSV)
debian:python-pip	20.0.2-1 · Debian:12	Package registry (OSV)
opensuse:python	2.7.17-lp151.10.29.1 · openSUSE:Leap 15.1	Package registry (OSV)
opensuse:python-base	2.7.17-lp151.10.29.1 · openSUSE:Leap 15.1	Package registry (OSV)
opensuse:python-doc	2.7.17-lp151.10.29.1 · openSUSE:Leap 15.1	Package registry (OSV)
opensuse:python-pip	20.0.2-150100.6.18.1 · openSUSE:Leap 15.3	Package registry (OSV)
opensuse:python-pip-wheel	10.0.1-lp152.4.6.1 · openSUSE:Leap 15.2	Package registry (OSV)
opensuse:python-setuptools	40.5.0-lp152.3.3.1 · openSUSE:Leap 15.2	Package registry (OSV)
opensuse:python-setuptools-test	40.5.0-lp152.3.3.1 · openSUSE:Leap 15.2	Package registry (OSV)
opensuse:python-setuptools-wheel	40.5.0-lp152.3.3.1 · openSUSE:Leap 15.2	Package registry (OSV)
opensuse:python3	3.6.12-lp152.4.9.1 · openSUSE:Leap 15.2	Package registry (OSV)
opensuse:python3-base	3.6.12-lp152.4.9.1 · openSUSE:Leap 15.2	Package registry (OSV)
opensuse:python3-core	3.6.12-lp152.4.17.1 · openSUSE:Leap 15.2	Package registry (OSV)
opensuse:python3-doc	3.6.12-lp152.4.9.1 · openSUSE:Leap 15.2	Package registry (OSV)
PyPI:pip	19.2	Package registry (OSV)
red hat:python27-python	0:2.7.18-2.el7 · Red Hat:rhel_software_collections:3::el7	Package registry (OSV)
red hat:python27-python-debug	0:2.7.18-2.el7 · Red Hat:rhel_software_collections:3::el7	Package registry (OSV)
red hat:python27-python-debuginfo	0:2.7.18-2.el7 · Red Hat:rhel_software_collections:3::el7	Package registry (OSV)
red hat:python27-python-devel	0:2.7.18-2.el7 · Red Hat:rhel_software_collections:3::el7	Package registry (OSV)

+33

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

TR-22-0465 · Jun 29, 2022(RedHat Güvenlik Güncellemesi)
TR-22-0432 · Jun 16, 2022(IBM Güvenlik Bildirimi)
TR-20-814 · Sep 30, 2020(Python için Güvenlik Güncellemeleri Yayınladı)

All national notices →

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: none
Integrity: high · data or configuration can be modified
Availability: none

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: None
Integrity impact: High
Availability impact: None

Weakness class (CWE)

CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSS vector

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

nvd-primary

Root cause

A user-supplied file name is joined with the allowed directory, but the result is never checked to confirm it is still inside that directory.

The bug in code

The whole CWE-22 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1const file = path.join(ROOT, req.query.name);
2res.sendFile(file);

Fixed

1const file = path.resolve(ROOT, req.query.name);
2if (!file.startsWith(ROOT + path.sep)) {
3  return res.sendStatus(400);
4}
5res.sendFile(file);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log

Fix✗ → ✓Sep 28, 2026, 10:46 PM UTC

For records you follow, these changes also arrive as notifications. →

References

lists.opensuse.org/opensuse-security-announce/2020-10/msg00005.html

Show all references (6 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records

Ecosystem	Package	Affected range	Fix
AlmaLinux:8	python-psycopg2-doc	before 2.7.5-7.module_el8.6.0+2781+fed64c13	2.7.5-7.module_el8.6.0+2781+fed64c13
AlmaLinux:8	python-sqlalchemy-doc	before 1.3.2-2.module_el8.6.0+2781+fed64c13	1.3.2-2.module_el8.6.0+2781+fed64c13
AlmaLinux:8	python-sqlalchemy-doc	before 1.3.2-2.module_el8.5.0+2569+5c5719bc	1.3.2-2.module_el8.5.0+2569+5c5719bc
AlmaLinux:8	python2-attrs	before 17.4.0-10.module_el8.6.0+2781+fed64c13	17.4.0-10.module_el8.6.0+2781+fed64c13
AlmaLinux:8	python2-chardet	before 3.0.4-10.module_el8.6.0+2781+fed64c13	3.0.4-10.module_el8.6.0+2781+fed64c13
AlmaLinux:8	python2-coverage	before 4.5.1-4.module_el8.6.0+2781+fed64c13	4.5.1-4.module_el8.6.0+2781+fed64c13
AlmaLinux:8	python2-Cython	before 0.28.1-7.module_el8.6.0+2781+fed64c13	0.28.1-7.module_el8.6.0+2781+fed64c13
AlmaLinux:8	python2-dns	before 1.15.0-10.module_el8.6.0+2781+fed64c13	1.15.0-10.module_el8.6.0+2781+fed64c13
AlmaLinux:8	python2-docs	before 2.7.16-2.module_el8.6.0+2781+fed64c13	2.7.16-2.module_el8.6.0+2781+fed64c13
AlmaLinux:8	python2-docs-info	before 2.7.16-2.module_el8.6.0+2781+fed64c13	2.7.16-2.module_el8.6.0+2781+fed64c13
AlmaLinux:8	python2-docutils	before 0.14-12.module_el8.6.0+2781+fed64c13	0.14-12.module_el8.6.0+2781+fed64c13
AlmaLinux:8	python2-funcsigs	before 1.0.2-13.module_el8.6.0+2781+fed64c13	1.0.2-13.module_el8.6.0+2781+fed64c13
AlmaLinux:8	python2-idna	before 2.5-7.module_el8.6.0+2781+fed64c13	2.5-7.module_el8.6.0+2781+fed64c13
AlmaLinux:8	python2-ipaddress	before 1.0.18-6.module_el8.6.0+2781+fed64c13	1.0.18-6.module_el8.6.0+2781+fed64c13
AlmaLinux:8	python2-markupsafe	before 0.23-19.module_el8.6.0+2781+fed64c13	0.23-19.module_el8.6.0+2781+fed64c13
AlmaLinux:8	python2-mock	before 2.0.0-13.module_el8.6.0+2781+fed64c13	2.0.0-13.module_el8.6.0+2781+fed64c13
AlmaLinux:8	python2-pluggy	before 0.6.0-8.module_el8.6.0+2781+fed64c13	0.6.0-8.module_el8.6.0+2781+fed64c13
AlmaLinux:8	python2-psycopg2	before 2.7.5-7.module_el8.6.0+2781+fed64c13	2.7.5-7.module_el8.6.0+2781+fed64c13
AlmaLinux:8	python2-psycopg2-debug	before 2.7.5-7.module_el8.6.0+2781+fed64c13	2.7.5-7.module_el8.6.0+2781+fed64c13
AlmaLinux:8	python2-psycopg2-tests	before 2.7.5-7.module_el8.6.0+2781+fed64c13	2.7.5-7.module_el8.6.0+2781+fed64c13
AlmaLinux:8	python2-py	before 1.5.3-6.module_el8.6.0+2781+fed64c13	1.5.3-6.module_el8.6.0+2781+fed64c13
AlmaLinux:8	python2-PyMySQL	before 0.8.0-10.module_el8.6.0+2781+fed64c13	0.8.0-10.module_el8.6.0+2781+fed64c13
AlmaLinux:8	python2-pysocks	before 1.6.8-6.module_el8.6.0+2781+fed64c13	1.6.8-6.module_el8.6.0+2781+fed64c13
AlmaLinux:8	python2-pytest	before 3.4.2-13.module_el8.6.0+2781+fed64c13	3.4.2-13.module_el8.6.0+2781+fed64c13