CVE-2026-59199

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/python-pillow/Pillow/commit/ceefc348eb3c3844c7f9796ef2cc3a7dd5fbba7b	Patch
https://github.com/python-pillow/Pillow/pull/9703	Exploit Issue Tracking Patch
https://github.com/python-pillow/Pillow/releases/tag/12.3.0	Release Notes
https://github.com/python-pillow/Pillow/security/advisories/GHSA-6r8x-57c9-28j4	Exploit Vendor Advisory
https://github.com/python-pillow/Pillow/security/advisories/GHSA-6r8x-57c9-28j4	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-07-14 16:17

Updated : 2026-07-15 16:16

NVD link : CVE-2026-59199

Mitre link : CVE-2026-59199

CVE.ORG link : CVE-2026-59199

JSON object : View

Products Affected

python

pillow

CWE

CWE-190

Integer Overflow or Wraparound

CWE-787

Out-of-bounds Write

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