CVE-2026-59199

Pillow: Heap out-of-bounds write `Image.paste()` / `Image.crop()` via signed coordinate overflow

Published: Jul 14, 2026Updated: Jul 15, 2026 Sources: CVE List NVDCWE-190

7.5HIGH

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

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Weaknesses

CWE-190 CWE-787

Affected Products

oss-project·US

oss-projectaka pillow

PillowLibrary

OSS Libraries / pypi

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Initial Access

Privilege Escalation

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References

https://github.com/python-pillow/Pillow/commit/ceefc348eb3c3844c7f9796ef2cc3a7dd5fbba7b

github.com

https://github.com/python-pillow/Pillow/pull/9703

github.com

https://github.com/python-pillow/Pillow/releases/tag/12.3.0

github.com

and 1 more references View all →

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