CVE-2026-59199 | Pillow is a Python imaging library. Prior to 12.3.0, Pillow … | CVSS 7.5 HIGH

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.

Metadata

CVE ID: CVE-2026-59199
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-07-02 19:53 UTC
Published: 2026-07-14 15:42 UTC
Last updated: 2026-07-14 15:42 UTC
Primary CWE: CWE-190
CWE-190: Integer Overflow or Wraparound
Vendor / Product: python-pillow / Pillow
Sources: cve.org · NVD

Severity & Metrics

7.5 HIGH CVSS 3.1

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

Affected products (1)

Vendor	Product	Platform	Versions
python-pillow	Pillow	—	< 12.3.0

Weakness (CWE)

CWE	Source	Description
CWE-190	cna	CWE-190: Integer Overflow or Wraparound
CWE-787	cna	CWE-787: Out-of-bounds Write

CVSS scores (1)

Score	Severity	Version	Source	Vector
7.5	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References (4)

https://github.com/python-pillow/Pillow/security/advisories/GHSA-6r8x-57c9-28j4 https://github.com/python-pillow/Pillow/security/advisories/GHSA-6r8x-57c9-28j4
https://github.com/python-pillow/Pillow/pull/9703 https://github.com/python-pillow/Pillow/pull/9703
https://github.com/python-pillow/Pillow/commit/ceefc348eb3c3844c7f9796ef2cc3a7dd5fbba7b https://github.com/python-pillow/Pillow/commit/ceefc348eb3c3844c7f9796ef2cc3a7dd5fbba7b
https://github.com/python-pillow/Pillow/releases/tag/12.3.0 https://github.com/python-pillow/Pillow/releases/tag/12.3.0