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Fencer Vulns
high 7.5

CVE-2026-32274 json

Black: Arbitrary file writes from unsanitized user input in cache file name

published 2026-03-12 7 mo ago modified 2026-09-10 1 mo ago also EUVD-2026-11698 , GHSA-3936-cmfr-pm3m , PYSEC-2026-2121

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits
0
none known

Summary

Black is the uncompromising Python code formatter. Starting in version 24.3.0 and prior to version 26.3.1, Black writes a cache file, the name of which is computed from various formatting options. The value of the --python-cell-magics option was placed in the filename without sanitization, which allowed an attacker who controls the value of this argument to write cache files to arbitrary file system locations. Fixed in Black 26.3.1.

Patch / fix

  • pypi black 26.3.1
  • Red Hat Red Hat Ansible Automation Platform 2.5 1777393635, 1777403872
  • Red Hat Red Hat Ansible Automation Platform 2.6 1777299023, 1777387242, 1777387537, 1777390240, 1777390333
  • Red Hat Red Hat OpenShift AI 2.25 1776318795, 1776319179, 1776319185, 1776319193, 1776319275, 1776319453, 1776336534
  • black Debian 13 25.1.0-3+deb13u1
  • black Debian 14 26.3.1-1

debian advisories DEBIAN-CVE-2026-32274

  • python-black SLES for SAP applications 16.0, SLES 16.0 25.1.0-160000.3.1
  • python-black openSUSE Leap 15.6 24.3.0-150400.9.11.1

suse advisories SUSE-SU-2026:20928-1SUSE-SU-2026:0900-1

  • ansible-lint openSUSE Tumbleweed 26.9.0-1.1
  • python-black openSUSE Leap 16.0 25.1.0-160000.3.1
  • python-black openSUSE Tumbleweed 26.3.1-1.1

opensuse advisories openSUSE-SU-2026:11856-1openSUSE-SU-2026:20417-1openSUSE-SU-2026:10372-1

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-2026-32274 updated cvss 7.5

black: Black: Arbitrary file writes from unsanitized user input in cache file name

  • Red Hat OpenShift Lightspeed openshift-lightspeed-tech-preview/lightspeed-rag-tool-rhel9 Red Hat Ansible Automation Platform Ansible Core 2 ansible-automation-platform/ee-minimal-rhel8, ansible-automation-platform/ee-minimal-rhel9, ansible-automation-platform-tech-preview/ee-minimal-rhel8, ansible-automation-platform-tech-preview/ee-minimal-rhel9 Red Hat OpenShift AI (RHOAI) rhoai/odh-model-registry-rhel8
    affected: workaround, no fix available
  • Red Hat OpenShift Virtualization 4 container-native-virtualization/vm-network-latency-checkup-rhel9
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Ansible Automation Platform 2.5 ansible-automation-platform-25 1777393635, ansible-automation-platform-25 1777403872
    fixed: vendor fix RHSA-2026:13553
  • Red Hat Ansible Automation Platform 2.6 ansible-automation-platform-26 1777299023, ansible-automation-platform-26 1777387242, ansible-automation-platform-26 1777387537, ansible-automation-platform-26 1777390240, ansible-automation-platform-26 1777390333
    fixed: vendor fix RHSA-2026:13545
  • Red Hat OpenShift AI 2.25 rhoai 1776318795, rhoai 1776319179, rhoai 1776319185, rhoai 1776319193, rhoai 1776319275, rhoai 1776319453, +1 more
    fixed: vendor fix RHSA-2026:10184
  • Red Hat OpenShift AI 3.3 rhoai/odh-workbench-jupyter-pytorch-cuda-py312-rhel9 1789651387, rhoai/odh-workbench-jupyter-pytorch-rocm-py312-rhel9 1789651385, rhoai/odh-workbench-jupyter-trustyai-cpu-py312-rhel9 1790260954, rhoai/odh-workbench-jupyter-datascience-cpu-py312-rhel9 1790331087, rhoai/odh-workbench-jupyter-tensorflow-cuda-py312-rhel9 1790077488, rhoai/odh-workbench-jupyter-tensorflow-rocm-py312-rhel9 1789983680, +1 more
    fixed: vendor fix RHSA-2026:73987
  • Red Hat Ansible Automation Platform 2 ansible-automation-platform-24/lightspeed-rhel8, ansible-automation-platform-26/ee-supported-rhel9 Red Hat Ansible Automation Platform 2.5 ansible-automation-platform 1777407814, ansible-automation-platform 1777407821, ansible-automation-platform-25 1777191649, ansible-automation-platform-25 1777191659, ansible-automation-platform-25 1777191672, ansible-automation-platform-25 1777191685, +19 more Red Hat Ansible Automation Platform 2.6 ansible-automation-platform 1777410604, ansible-automation-platform 1777410621, ansible-automation-platform-26 1777163004, ansible-automation-platform-26 1777163348, ansible-automation-platform-26 1777163557, ansible-automation-platform-26 1777163594, +19 more
    not affected: vulnerable code not present
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-mlflow-rhel9, rhoai/odh-kserve-agent-rhel9, rhoai/odh-kserve-router-rhel9, rhoai/odh-kserve-controller-rhel9, rhoai/odh-training-operator-rhel8, rhoai/odh-kserve-storage-initializer-rhel9
    not affected: vulnerable code not in execute path
show 1 more
  • Red Hat OpenShift AI 2.25 rhoai 1775144403, rhoai 1776243157, rhoai 1776243163, rhoai 1776243192, rhoai 1776243217, rhoai 1776243229, +64 more Red Hat OpenShift AI 3.3 rhoai/odh-cli-rhel9 1790070206, rhoai/rhai-cli-rhel9 1790070206, rhoai/odh-mlflow-rhel9 1789653606, rhoai/odh-trainer-rhel9 1790136369, rhoai/odh-maas-api-rhel9 1790131842, rhoai/odh-mlserver-rhel9 1789121365, +70 more
    not affected: vulnerable code not present

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
yes
Technical impact
partial
Assessed
7 mo ago

Exploit prediction

0.69% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CNA 4.0 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/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 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected packages

ecosystem package affected fixed in
pypi black
>=24.3.0, <26.3.1
<26.3.1
26.3.1

Affected products

  • psf black
  • Red Hat Red Hat Ansible Automation Platform 2.5
  • Red Hat Red Hat Ansible Automation Platform 2.6
  • Red Hat Red Hat OpenShift AI 2.25
  • Red Hat OpenShift Lightspeed
  • Red Hat Red Hat Ansible Automation Platform 2
  • Red Hat Red Hat Ansible Automation Platform Ansible Core 2
  • Red Hat Red Hat OpenShift AI (RHOAI)
  • Red Hat Red Hat OpenShift Virtualization 4

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.