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NVD / CVE Program· CNA PSF

CVE-2026-13346: pip absolute path traversal during download from malicious package indexes

Noroxi assessment

Priority: Monitor (action score 22/100)

  • 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: 0.29% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. Administrator privileges are required. Special conditions such as timing or configuration are required.
  • Fixed version: Python Packaging Authority pip 26.2; azl3 python-pip 24.2-10 on Azure Linux 3.0 24.2-10; azl3 python-pip 24.2-9 on Azure Linux 3.0 24.2-10.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Python Packaging Authority pip 26.2; azl3 python-pip 24.2-10 on Azure Linux 3.0 24.2-10; azl3 python-pip 24.2-9 on Azure Linux 3.0 24.2-10 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

pip would incorrectly handle doubly-encoded package URLs from indexes allowing for files to be installed to arbitrary locations on disk even when installing wheels. This vulnerability requires downloading or installing a package from a malicious package index to succeed, malicious packages alone are not able to exploit this vulnerability. Note that this vulnerability only materially impacts users running `pip download` with the `--only-binary` option as installing source distributions from an untrusted index is already an unsafe operation that executes code during install time.

MediumCVSS 5.6 · v4.0—No exploit Fix available
Published
Jul 29, 2026
Updated
Oct 24, 2026
EPSS
0.2% · 21th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.6 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · PSF
5.6
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-13346

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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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.

VendorProduct
pypapip

Affected versions

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

  • pypa pipbefore 26.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (PSF). Independent of NVD's CPE analysis and usually ahead of it.

  • Python Packaging Authority pip

    • before 26.2affected · python

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12python-pipfrom 0—
Debian:14python-pipbefore 26.2.2+dfsg-126.2.2+dfsg-1
openSUSE:Leap 16.0python-pipbefore 25.0.1-160000.6.125.0.1-160000.6.1
openSUSE:Tumbleweedpython-pipbefore 26.2-1.126.2-1.1
openSUSE:Tumbleweedpython310before 3.10.20-10.13.10.20-10.1
PyPIpipbefore 26.2.026.2.0
PyPIpipbefore 26.226.2
Red Hat:hummingbird:1python-pipbefore 0:26.2-0.1.hum10:26.2-0.1.hum1
Red Hat:hummingbird:1python-pip-wheelbefore 0:26.2-0.1.hum10:26.2-0.1.hum1
Red Hat:hummingbird:1python3-pipbefore 0:26.2-0.1.hum10:26.2-0.1.hum1
SUSE:EL-10:Update:Products:MultiLinuxManagerTools:Updatesaltbundlepybefore 3.11.15-100002.1.9.13.11.15-100002.1.9.1
SUSE:EL-10:Update:Products:MultiLinuxManagerTools:Updatesaltbundlepy-cffibefore 1.17.1-100002.1.6.21.17.1-100002.1.6.2
SUSE:EL-10:Update:Products:MultiLinuxManagerTools:Updatesaltbundlepy-corebefore 3.11.15-100002.1.9.13.11.15-100002.1.9.1
SUSE:EL-10:Update:Products:MultiLinuxManagerTools:Updatesaltbundlepy-cryptographybefore 3.3.2-100002.1.6.23.3.2-100002.1.6.2
SUSE:EL-10:Update:Products:MultiLinuxManagerTools:Updatesaltbundlepy-cssselectbefore 1.3.0-100002.1.6.21.3.0-100002.1.6.2
SUSE:EL-10:Update:Products:MultiLinuxManagerTools:Updatesaltbundlepy-editablesbefore 0.5-100002.1.6.20.5-100002.1.6.2
SUSE:EL-10:Update:Products:MultiLinuxManagerTools:Updatesaltbundlepy-exceptiongroupbefore 1.2.2-100002.1.6.21.2.2-100002.1.6.2
SUSE:EL-10:Update:Products:MultiLinuxManagerTools:Updatesaltbundlepy-exceptiongroup-testbefore 1.2.2-100002.1.6.21.2.2-100002.1.6.2
SUSE:EL-10:Update:Products:MultiLinuxManagerTools:Updatesaltbundlepy-flit-corebefore 3.12.0-100002.1.6.13.12.0-100002.1.6.1
SUSE:EL-10:Update:Products:MultiLinuxManagerTools:Updatesaltbundlepy-hatch-fancy-pypi-readmebefore 25.1.0-100002.1.6.125.1.0-100002.1.6.1
SUSE:EL-10:Update:Products:MultiLinuxManagerTools:Updatesaltbundlepy-hatch-fancy-pypi-readme-testbefore 25.1.0-100002.1.6.125.1.0-100002.1.6.1
SUSE:EL-10:Update:Products:MultiLinuxManagerTools:Updatesaltbundlepy-hatch-vcsbefore 0.5.0-100002.1.6.10.5.0-100002.1.6.1
SUSE:EL-10:Update:Products:MultiLinuxManagerTools:Updatesaltbundlepy-hatch-vcs-testbefore 0.5.0-100002.1.6.10.5.0-100002.1.6.1
SUSE:EL-10:Update:Products:MultiLinuxManagerTools:Updatesaltbundlepy-hatchlingbefore 1.31.0-100002.1.6.11.31.0-100002.1.6.1

+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-2019-20916The pip package before 19.2 for Python allows Directory Traversal when a URL is given in an install command, because a Content-Disposition h
    31Monitor
  • 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

Published before and after this one in the same product

  • ← EarlierCVE-2021-3572Nov 10, 2021 · A flaw was found in python-pip in the way it handled Unicode separators in git references.
    23Monitor
  • ← EarlierCVE-2023-5752Oct 25, 2023 · Mercurial configuration injectable in repo revision when installing via pip
    13Monitor
  • ← EarlierCVE-2026-8643Jun 1, 2026 · pip can extract console_scripts and gui_scripts outside installation directory
    16Monitor

Remediation

Which version to upgrade to

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

Product / packageFixed versionSource
Python Packaging Authority pip26.2Vendor (CNA)
azl3 python-pip 24.2-10 on Azure Linux 3.024.2-10Microsoft (MSRC)
azl3 python-pip 24.2-9 on Azure Linux 3.024.2-10 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 python-virtualenv 20.36.1-5 on Azure Linux 3.020.36.1-6 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 python-virtualenv 20.36.1-6 on Azure Linux 3.020.36.1-6Microsoft (MSRC)
debian:python-pip26.2.2+dfsg-1 · Debian:14Package registry (OSV)
opensuse:python-pip26.2-1.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:python3103.10.20-10.1 · openSUSE:TumbleweedPackage registry (OSV)
PyPI:pip26.2Package registry (OSV)
PyPI:pip26.2.0Package registry (OSV)
red hat:python-pip0:26.2-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:python-pip-wheel0:26.2-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:python3-pip0:26.2-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
suse:python2.7.18-150000.126.1 · SUSE:Linux Enterprise Module for Package Hub 15 SP7Package registry (OSV)
suse:python-base2.7.18-150000.126.1 · SUSE:Linux Enterprise Module for Package Hub 15 SP7Package registry (OSV)
suse:python-doc2.7.18-33.85.2 · SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5Package registry (OSV)
suse:python-pip25.0.1-160000.6.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)
suse:python33.4.10-25.194.2 · SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5Package registry (OSV)
suse:python3-base3.4.10-25.194.2 · SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5Package registry (OSV)
suse:python3-pip20.0.2-150400.26.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP7Package registry (OSV)
suse:python3-pip-wheel20.0.2-150400.26.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP7Package registry (OSV)
suse:python313-pip24.2-150700.3.3.1 · SUSE:Linux Enterprise Module for Python 3 15 SP7Package registry (OSV)
suse:python36-pip20.2.4-8.18.1 · SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5Package registry (OSV)
suse:python393.9.25-150300.4.109.1 · SUSE:Linux Enterprise Server 15 SP5-LTSSPackage registry (OSV)
suse:python39-core3.9.25-150300.4.109.1 · SUSE:Linux Enterprise Server 15 SP5-LTSSPackage registry (OSV)

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.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • Administrator privileges are required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
High
Privileges required
High
User interaction
A
Scope
X

Weakness class (CWE)

CWE-36 · Absolute Path Traversal

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

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

  1. Fix✗ → ✓

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

References

Show all references (2 more)

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

All records