CVE-2026-40192
No exploitation reported by the sources we read.
- Published2026-04-15
- Fixed in12.2.0
- WeaknessCWE-400 · CWE-409 · CWE-770
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
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.
Timeline
dates in UTC- 2026-04-1523:16CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-40192?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-40192?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 12.2 | ≥ 10.3.0, < 12.2.0 | 12.2.0 | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
Red Hat Security Advisory: Red Hat AI Inference Server 3.2.2 (ROCm)
Red Hat Security Advisory: Red Hat AI Inference Server Model Optimization Tools 3.2.2 (CUDA)
Red Hat Security Advisory: Red Hat AI Inference Server 3.2.2 (CUDA)
Red Hat Security Advisory: RHOAI 3.3.5 - Red Hat OpenShift AI
Red Hat Security Advisory: Satellite 6.19.2 Async Update
Red Hat Security Advisory: Satellite 6.18.7 Async Update
14 more advisories
Fix
- Update Python pillow to 12.2.0
- Vendor fix Red Hat Product Security RHSA-2026:61629 · 1 productFor more information visit https://access.redhat.com/errata/RHSA-2026:61629
- Vendor fix Red Hat Product Security RHSA-2026:61628 · 2 productsFor more information visit https://access.redhat.com/errata/RHSA-2026:61628
- Vendor fix Red Hat Product Security RHSA-2026:61627 · 2 productsFor more information visit https://access.redhat.com/errata/RHSA-2026:61627
- Vendor fix Red Hat Product Security RHSA-2026:37275 · 6 productsFor Red Hat OpenShift AI 3.3.5 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this errata update: https://docs.redhat.com/en/documentation/red_hat_openshift_ai/
- Vendor fix Red Hat Product Security RHSA-2026:34365 · 8 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For detailed instructions how to apply this update, refer to: https://docs.redhat.com/en/documentation/red_hat_satellite/6.19/html/updating_red_hat_satellite/index
- Vendor fix Red Hat Product Security RHSA-2026:34368 · 8 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For detailed instructions how to apply this update, refer to: https://docs.redhat.com/en/documentation/red_hat_satellite/6.18/html/updating_red_hat_satellite/index
Advisories and patches
- github.comPatch
- github.comPatch
- github.comMitigation · Patch · Vendor Advisory
- pillow.readthedocs.ioRelease Notes
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 4.0 vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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
- Published
- 2026-04-15
- Last Modified
- 2026-09-10
- NVD status
- Modified
Frequently asked questions
What is CVE-2026-40192?
Is CVE-2026-40192 actively exploited?
What is the CVSS score for CVE-2026-40192?
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