UBUNTU-CVE-2026-40192

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Source
https://ubuntu.com/security/CVE-2026-40192
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40192.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-40192
Upstream
  • CVE-2026-40192
Downstream
Related
Published
2026-04-17T00:00:00Z
Modified
2026-05-20T16:25:38.975223682Z
Severity
  • 8.7 (High) CVSS_V4 - 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 CVSS Calculator
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:25.10 / pillow

Package

Name
pillow
Purl
pkg:deb/ubuntu/pillow?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
11.3.0-1ubuntu1.2

Affected versions

11.*
11.1.0-5build1
11.3.0-1ubuntu1
11.3.0-1ubuntu1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "11.3.0-1ubuntu1.2",
            "binary_name": "python3-pil"
        },
        {
            "binary_version": "11.3.0-1ubuntu1.2",
            "binary_name": "python3-pil.imagetk"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40192.json"

Ubuntu:26.04:LTS / pillow

Package

Name
pillow
Purl
pkg:deb/ubuntu/pillow?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
12.1.1-2ubuntu1.1

Affected versions

11.*
11.3.0-1ubuntu1
11.3.0-1ubuntu2
12.*
12.0.0-1ubuntu1
12.1.1-1ubuntu1
12.1.1-2ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "12.1.1-2ubuntu1.1",
            "binary_name": "python3-pil"
        },
        {
            "binary_version": "12.1.1-2ubuntu1.1",
            "binary_name": "python3-pil.imagetk"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40192.json"