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Fencer Vulns
none 0.0

CVE-2026-3479 json

pkgutil.get_data() does not enforce documented restrictions

published 2026-03-18 7 mo ago modified 2026-06-17 4 mo ago also BIT-python-2026-3479 , BIT-python-min-2026-3479 , EUVD-2026-12940

cvss
0.0
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 16%
public exploits
0
none known

Summary

DISPUTED: The project has clarified that the documentation was incorrect, and that pkgutil.get_data() has the same security model as open(). The documentation has been updated to clarify this point. There is no vulnerability in the function if following the intended security model.

pkgutil.get_data() did not validate the resource argument as documented, allowing path traversals.

Patch / fix

  • Python Software Foundation CPython 3.13.13, 3.14.4, 3.15.0a8
  • python3.12 hummingbird 1 3.12.14-1.hum1
  • python3.12-idle hummingbird 1 3.12.14-1.hum1
  • python3.12-libs hummingbird 1 3.12.14-1.hum1
  • python3.12-test hummingbird 1 3.12.14-1.hum1
  • python3.12-tkinter hummingbird 1 3.12.14-1.hum1
  • python3.11 hummingbird 1 3.11.16-1.hum1
  • python3.11-idle hummingbird 1 3.11.16-1.hum1
  • python3.11-libs hummingbird 1 3.11.16-1.hum1

red hat advisories RHSA-2026:58420RHSA-2026:57660RHSA-2026:11324RHSA-2026:10118RHSA-2026:7661RHSA-2026:7443

  • python3 SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES for SAP 15 SP4 +11 more 3.6.15-150300.10.129.1
  • python3-core SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES for SAP 15 SP4 +12 more 3.6.15-150300.10.129.1
  • grafana Multi Linux Manager Tools SLE-15 12.4.10-150002.4.27.1
  • mgr-push Multi Linux Manager Tools SLE-15 5.2.5-150002.3.12.1
  • spacecmd Multi Linux Manager Tools SLE-15 5.2.10-150002.3.15.1
  • uyuni-tools Multi Linux Manager Tools SLE-Micro-5, Multi Linux Manager Tools SLE-15 5.2.17-150002.3.20.1
  • venv-salt-minion Multi Linux Manager Tools SLE-Micro-5, Multi Linux Manager Tools SLE-15 3006.0-150002.5.22.1
  • spacewalk-client-tools Multi Linux Manager Tools SLE-15 5.2.7-150002.3.12.1

suse advisories SUSE-SU-2026:4754-1SUSE-SU-2026:4743-1SUSE-SU-2026:4585-1SUSE-SU-2026:4584-1SUSE-SU-2026:4583-1SUSE-SU-2026:4582-1

  • python-moto openSUSE Tumbleweed 5.2.1-1.1
  • python311 openSUSE Tumbleweed 3.11.15-5.1
  • python313 openSUSE Tumbleweed 3.13.13-1.1
  • python314 openSUSE Tumbleweed 3.14.4-1.1
  • python313 openSUSE Leap 16.0 3.13.13-160000.1.1
  • python313-core openSUSE Leap 16.0 3.13.13-160000.1.1
  • python313-nogil openSUSE Leap 16.0 3.13.13-160000.1.1
  • python313-documentation openSUSE Leap 16.0 3.13.13-160000.1.1

opensuse advisories openSUSE-SU-2026:10782-1openSUSE-SU-2026:10552-1openSUSE-SU-2026:10553-1openSUSE-SU-2026:10554-1openSUSE-SU-2026:20517-1openSUSE-SU-2026:10520-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-3479 updated cvss 3.3

python: Python pkgutil.get_data(): Path Traversal via improper resource argument validation

  • Red Hat Enterprise Linux 6 python, tkinter, python-libs, python-test, python-tools Red Hat Enterprise Linux 7 python, python3, tkinter, python-libs, python-test, python-tools, +4 more Red Hat Enterprise Linux 8 numpy, scipy, PyYAML, python3, mod_wsgi, python36, +89 more Red Hat Enterprise Linux 9 python3, python3.9, python3.11, python3.12, python3.14, python3-idle, +21 more Red Hat Enterprise Linux 10 python3.12, python3.14 Red Hat Enterprise Linux AI (RHEL AI) 3 rhelai3/bootc-cuda-rhel9, rhelai3/bootc-rocm-rhel9, rhelai3/bootc-aws-cuda-rhel9, rhelai3/bootc-gcp-cuda-rhel9, rhelai3/bootc-azure-cuda-rhel9, rhelai3/bootc-azure-rocm-rhel9
    +2 more products
    Red Hat OpenShift AI (RHOAI) rhoai/odh-workbench-codeserver-datascience-cpu-py312-rhel9 Red Hat OpenShift Dev Spaces devspaces/code-rhel9, devspaces/pluginregistry-rhel9
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Hardened Images python3 3.14.4-1.hum1, python3.14 3.14.4-1.hum1, python3.11 3.11.16-1.hum1, python3.12 3.12.14-1.hum1, python3.13 3.13.13-1.hum1, python3-idle 3.14.4-1.hum1, +32 more
    fixed: vendor fix RHSA-2026:7661

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
7 mo ago

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 0.0 CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N
CNA 4.0 0.0 CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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

Affected products

  • Python Software Foundation CPython

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.