CVE-2026-59199
HIGHPillow: Heap out-of-bounds write `Image.paste()` / `Image.crop()` via signed coordinate overflow
Title source: cnaDescription
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.
References (4)
Core 4
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/python-pillow/Pillow/security/advisories/GHSA-6r8x-57c9-28j4
X_Refsource_Misc x_refsource_misc
https://github.com/python-pillow/Pillow/pull/9703
X_Refsource_Misc x_refsource_misc
https://github.com/python-pillow/Pillow/commit/ceefc348eb3c3844c7f9796ef2cc3a7dd5fbba7b
X_Refsource_Misc x_refsource_misc
https://github.com/python-pillow/Pillow/releases/tag/12.3.0
Scores
CVSS v3
7.5
EPSS
0.0039
EPSS Percentile
31.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-190
CWE-787
Status
published
Products (3)
pypi/Pillow
0 - 12.3.0PyPI
python/pillow
< 12.3.0
python-pillow/Pillow
< 12.3.0
Published
Jul 14, 2026
Tracked Since
Jul 14, 2026