CVE-2026-59199

HighCVSS 7.5/10Last modified Oct 24, 2026

Description

Pillow is a Python imaging library. Prior to 12.3.0, Pillow public image coordinate APIs can trigger a native heap out-of-bounds write when given coordinates near the signed 32-bit integer limits in Image.paste(), Image.crop(), or Image.alpha_composite(). This issue is fixed in version 12.3.0.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-190 CWE-787

Affected software

Vendor	Product	Versions
python-pillow	Pillow	< 12.3.0

References

https://github.com/python-pillow/Pillow/commit/ceefc348eb3c3844c7f9796ef2cc3a7dd5fbba7bPatch
https://github.com/python-pillow/Pillow/pull/9703Exploit, Issue Tracking, Patch
https://github.com/python-pillow/Pillow/releases/tag/12.3.0Release Notes
https://github.com/python-pillow/Pillow/security/advisories/GHSA-6r8x-57c9-28j4Exploit, Vendor Advisory
https://github.com/python-pillow/Pillow/security/advisories/GHSA-6r8x-57c9-28j4Exploit, Vendor Advisory

Timeline

Published: Jul 14, 2026
Last modified: Oct 24, 2026
NVD status: Modified

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