PYSEC-2026-4333

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Import Source
https://github.com/pypa/advisory-database/blob/main/vulns/pillow/PYSEC-2026-4333.yaml
JSON Data
https://api.osv.dev/v1/vulns/PYSEC-2026-4333
Aliases
Published
2026-10-19T22:17:08Z
Modified
2026-10-28T11:10:36Z
Severity
  • 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
Summary
[none]
Details

Pillow is a Python imaging library. From 12.0.0 until 13.0.0, Pillow's Image.merge() can dereference a null image8 plane. Validation skips the first input band, allowing a 32-bit integer or floating-point image backed by image32 storage to be merged as a narrower multiband image. A crafted IPTC file can reach this path when an application opens and loads it, or a caller can invoke Image.merge() directly with such a first band. This causes a native process crash. This issue is fixed in version 13.0.0.

References

Affected packages

PyPI / pillow

Package

Affected ranges

Type
ECOSYSTEM
Events
Introduced
12.0.0
Fixed
13.0.0

Affected versions

12.*
12.0.0
12.1.0
12.1.1
12.2.0
12.3.0

Database specific

source
"https://github.com/pypa/advisory-database/blob/main/vulns/pillow/PYSEC-2026-4333.yaml"