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Fencer Vulns
high 7.8

CVE-2026-42311 json

Pillow: OOB Write with Invalid PSD Tile Extents (Integer Overflow)

published 2026-05-04 6 mo ago modified 2026-09-10 1 mo ago also BIT-pillow-2026-42311 , EUVD-2026-28903 , GHSA-pwv6-vv43-88gr , PYSEC-2026-2252

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 4%
public exploits
0
none known

Summary

Pillow is a Python imaging library. From version 10.3.0 to before version 12.2.0, processing a malicious PSD file could lead to memory corruption, potentially resulting in a crash or arbitrary code execution. This issue has been patched in version 12.2.0.

Patch / fix

  • pypi pillow 12.2.0
  • bitnami pillow 12.2.0
  • python pillow 12.2.0
  • pillow Debian 13 11.1.0-5+deb13u3
  • pillow Debian 14 12.2.0-1

debian advisories DEBIAN-CVE-2026-42311

  • pillow Ubuntu 25.10 11.3.0-1ubuntu1.3
  • pillow Ubuntu 26.04 LTS 12.1.1-2ubuntu1.2

ubuntu advisories UBUNTU-CVE-2026-42311

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • python-Pillow SLES for SAP applications 16.0, SLES 16.0 11.3.0-160000.6.1

suse advisories SUSE-SU-2026:22626-1

  • python-Pillow openSUSE Tumbleweed 12.3.0-1.1
  • python-Pillow openSUSE Leap 16.0 11.3.0-160000.6.1

opensuse advisories openSUSE-SU-2026:11261-1openSUSE-SU-2026:21296-1

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-2026-42311 updated cvss 7.8

Pillow: python-pillow: Pillow: Arbitrary code execution via malicious PSD file processing

  • Red Hat Exploit Intelligence exploit-intelligence-tech-preview/vulnerability-analysis-rhel9
    affected: workaround, no fix planned “Will not fix”
  • Red Hat OpenShift Lightspeed openshift-lightspeed/lightspeed-ocp-rag-rhel9, openshift-lightspeed/lightspeed-service-api-rhel9
    affected: workaround, no fix available
  • Red Hat AI Inference Server rhaiis/vllm-cpu-rhel9, rhaiis/vllm-tpu-rhel9, rhaiis/vllm-spyre-rhel9, rhaiis/vllm-neuron-rhel9 Red Hat Ansible Automation Platform 2 ansible-automation-platform-25/lightspeed-chatbot-rhel8
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Enterprise Linux AI (RHEL AI) 3 rhelai3/bootc-cuda-rhel9, rhelai3/bootc-rocm-rhel9, rhelai3/bootc-gaudi-rhel9, rhelai3/disk-image-cuda-rhel9 Red Hat OpenShift AI (RHOAI) rhoai/odh-mlflow-rhel9, rhoai/odh-vllm-gaudi-rhel9, rhoai/odh-llama-stack-core-rhel9, rhoai/odh-pipeline-runtime-pytorch-cuda-py312-rhel9, rhoai/odh-pipeline-runtime-pytorch-rocm-py312-rhel9, rhoai/odh-workbench-jupyter-pytorch-cuda-py312-rhel9, +10 more Red Hat Quay 3 quay/quay-rhel8
    affected: workaround, no fix available
  • Red Hat AI Inference Server 3.2 rhaiis/model-opt-cuda-rhel9 1787772157
    fixed: vendor fix RHSA-2026:61628
  • Red Hat AI Inference Server 3.3 rhaiis 1778244531, rhaiis 1778244559, rhaiis 1778274666
    fixed: vendor fix RHSA-2026:16008
  • Red Hat AI Inference Server 3.4 rhaii/vllm-spyre-rhel9 1787151840, rhaii/vllm-spyre-rhel9 1789681201, rhaii/vllm-spyre-rhel9 1790076141
    fixed: vendor fix RHSA-2026:70969
  • Red Hat OpenShift AI 3.4 rhoai/odh-automl-rhel9 1786612415, rhoai/odh-autorag-rhel9 1786612637, rhoai/odh-openvino-model-server-rhel9 1787303251, rhoai/odh-training-rocm64-torch29-py312-rhel9 1786611435, rhoai/odh-training-cuda128-torch29-py312-rhel9 1786611803, rhoai/odh-trustyai-garak-lls-provider-dsp-rhel9 1786613209, +1 more
    fixed: vendor fix RHSA-2026:60520
show 3 more
  • Red Hat Lightspeed Core lightspeed-core/lightspeed-stack-rhel9 Red Hat OpenShift Lightspeed openshift-lightspeed-tech-preview/lightspeed-rag-tool-rhel9 Red Hat AI Inference Server rhaii/vllm-cpu-rhel9, rhaii/vllm-tpu-rhel9, rhaii/vllm-cuda-rhel9, rhaii/vllm-rocm-rhel9, rhaii/vllm-gaudi-rhel9, rhaii/vllm-neuron-rhel9, +1 more Red Hat Ansible Automation Platform 2 python-pillow 10.3.0-1.el9ap, ansible-automation-platform-26/hub-rhel9, ansible-automation-platform-27/hub-rhel9, ansible-automation-platform/automation-dashboard-rhel9, ansible-automation-platform-26/lightspeed-chatbot-rhel9, ansible-automation-platform-27/lightspeed-chatbot-rhel9 Red Hat Enterprise Linux 7 python-pillow, python-pillow-qt, python-pillow-tk, python-pillow-sane, python-pillow 10.3.0-1.el9ap Red Hat Enterprise Linux 8 python3-pillow, python3-pillow-tk, python-pillow 10.3.0-1.el9ap
    +1 more products
    Red Hat Enterprise Linux AI (RHEL AI) 3 rhelai3/bootc-aws-cuda-rhel9, rhelai3/bootc-gcp-cuda-rhel9, rhelai3/bootc-azure-cuda-rhel9, rhelai3/bootc-azure-rocm-rhel9
    not affected: vulnerable code not present
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-vllm-rocm-rhel9, rhoai/odh-caikit-nlp-rhel9, rhoai/odh-kserve-agent-rhel9, rhoai/odh-kserve-router-rhel9, rhoai/odh-llm-d-kv-cache-rhel9, rhoai/odh-kserve-controller-rhel9, +10 more
    not affected: component not present
  • Red Hat OpenShift AI 3.4 rhoai/odh-cli-rhel9 1787330837, rhoai/rhai-cli-rhel9 1787330837, rhoai/odh-mlflow-rhel9 1787226790, rhoai/odh-trainer-rhel9 1787089049, rhoai/odh-eval-hub-rhel9 1787087463, rhoai/odh-maas-api-rhel9 1787153683, +93 more Red Hat Quay 3 quay/quay-rhel9 Red Hat Satellite 6 python-pillow 10.3.0-1.el9ap, python-pillow 12.2.0-1.el8pc
    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
total
Assessed
5 mo ago

Exploit prediction

0.15% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 8.6 CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA 4.0 8.6 CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
OSV 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
pypi pillow
>=10.3.0, <12.2.0
12.2.0
bitnami pillow
>=10.3.0, <12.2.0
12.2.0

Affected products

  • python-pillow Pillow

Classification

Weakness

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.