Description
Pillow is a Python imaging library. Versions 10.3.0 through 12.1.1 did not limit the amount of GZIP-compressed data read when decoding a FITS image, making them vulnerable to decompression bomb attacks. A specially crafted FITS file could cause unbounded memory consumption, leading to denial of service (OOM crash or severe performance degradation). If users are unable to immediately upgrade, they should only open specific image formats, excluding FITS, as a workaround.
Metrics
CVSS 3.1 7.5/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| python-pillow | Pillow | >= 10.3.0, < 12.2.0 |
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 8 | — |
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 9 | — |
| Red Hat | Red Hat Ansible Automation Platform 2.6 for RHEL 9 | — |
| Red Hat | Red Hat Satellite 6.16 for RHEL 8 | — |
| Red Hat | Red Hat Satellite 6.16 for RHEL 9 | — |
| Red Hat | Red Hat Satellite 6.17 for RHEL 9 | — |
| Red Hat | Red Hat Satellite 6.18 for RHEL 9 | — |
| Red Hat | Red Hat Satellite 6.19 for RHEL 9 | — |
| Red Hat | Red Hat AI Inference Server 3.2 | — |
| Red Hat | Red Hat AI Inference Server 3.2 | — |
| Red Hat | Red Hat AI Inference Server 3.2 | — |
| Red Hat | Red Hat AI Inference Server 3.3 | — |
| Red Hat | Red Hat AI Inference Server 3.3 | — |
| Red Hat | Red Hat AI Inference Server 3.3 | — |
| Red Hat | Red Hat AI Inference Server 3.3 | — |
| Red Hat | Red Hat AI Inference Server 3.4 | — |
| Red Hat | Red Hat Ansible Automation Platform 2.6 | — |
| Red Hat | Red Hat Ansible Automation Platform 2.6 | — |
| Red Hat | Red Hat Enterprise Linux AI 3.3 | — |
| Red Hat | Red Hat Enterprise Linux AI 3.3 | — |
| Red Hat | Red Hat Enterprise Linux AI 3.3 | — |
| Red Hat | Red Hat Enterprise Linux AI 3.3 | — |
| Red Hat | Red Hat Enterprise Linux AI 3.3 | — |
| Red Hat | Red Hat Enterprise Linux AI 3.3 | — |
| Red Hat | Red Hat Enterprise Linux AI 3.3 | — |
| Red Hat | Red Hat OpenShift AI 2.25 | — |
| Red Hat | Red Hat OpenShift AI 2.25 | — |
| Red Hat | Red Hat OpenShift AI 3.3 | — |
| Red Hat | Red Hat OpenShift AI 3.3 | — |
| Red Hat | Red Hat OpenShift AI 3.3 | — |
| Red Hat | Red Hat OpenShift AI 3.3 | — |
| Red Hat | Red Hat OpenShift AI 3.3 | — |
| Red Hat | Red Hat OpenShift AI 3.3 | — |
| Red Hat | Red Hat OpenShift AI 3.3 | — |
| Red Hat | Red Hat OpenShift AI 3.3 | — |
| Red Hat | Red Hat OpenShift AI 3.3 | — |
| Red Hat | Red Hat OpenShift AI 3.3 | — |
| Red Hat | Red Hat OpenShift AI 3.3 | — |
| Red Hat | Red Hat OpenShift AI 3.3 | — |
| Red Hat | Red Hat OpenShift AI 3.3 | — |
| Red Hat | Red Hat OpenShift AI 3.3 | — |
| Red Hat | Red Hat OpenShift AI 3.3 | — |
| Red Hat | Red Hat OpenShift AI 3.3 | — |
| Red Hat | Red Hat OpenShift AI 3.3 | — |
| Red Hat | Red Hat OpenShift AI 3.3 | — |
| Red Hat | Red Hat Quay 3.10 | — |
| Red Hat | Red Hat Quay 3.12 | — |
| Red Hat | Red Hat Quay 3.14 | — |
| Red Hat | Red Hat Quay 3.15 | — |
References
- https://github.com/python-pillow/Pillow/commit/3cb854e8b2bab43f40e342e665f9340d861aa628Patch
- https://github.com/python-pillow/Pillow/pull/9521Issue Tracking, Patch
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-whj4-6x5x-4v2jMitigation, Patch, Vendor Advisory
- https://pillow.readthedocs.io/en/stable/releasenotes/12.2.0.html#prevent-fits-decompression-bombRelease Notes
- https://access.redhat.com/errata/RHSA-2026:16008
- https://access.redhat.com/errata/RHSA-2026:16009
- https://access.redhat.com/errata/RHSA-2026:16030
- https://access.redhat.com/errata/RHSA-2026:16174
- https://access.redhat.com/errata/RHSA-2026:17609
- https://access.redhat.com/errata/RHSA-2026:17611
- https://access.redhat.com/errata/RHSA-2026:19375
- https://access.redhat.com/errata/RHSA-2026:19712
- https://access.redhat.com/errata/RHSA-2026:21017
- https://access.redhat.com/errata/RHSA-2026:22465
- https://access.redhat.com/errata/RHSA-2026:22629
- https://access.redhat.com/errata/RHSA-2026:22840
- https://access.redhat.com/errata/RHSA-2026:23361
- https://access.redhat.com/errata/RHSA-2026:24761
- https://access.redhat.com/errata/RHSA-2026:24762
- https://access.redhat.com/errata/RHSA-2026:24853
- https://access.redhat.com/errata/RHSA-2026:24866
- https://access.redhat.com/errata/RHSA-2026:24977
- https://access.redhat.com/errata/RHSA-2026:27076
- https://access.redhat.com/errata/RHSA-2026:34365
- https://access.redhat.com/errata/RHSA-2026:34366
- https://access.redhat.com/errata/RHSA-2026:34368
- https://access.redhat.com/errata/RHSA-2026:37275
- https://access.redhat.com/errata/RHSA-2026:57387
- https://access.redhat.com/errata/RHSA-2026:61627
- https://access.redhat.com/errata/RHSA-2026:61628
- https://access.redhat.com/errata/RHSA-2026:61629
- https://access.redhat.com/errata/RHSA-2026:65126
- https://access.redhat.com/security/cve/CVE-2026-40192
- https://bugzilla.redhat.com/show_bug.cgi?id=2458856
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40192.json
Timeline
- Published
- Apr 15, 2026
- Last modified
- Oct 26, 2026
- NVD status
- Modified