CVE-2026-59204

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-59204
Pillow is a Python imaging library. From 8.2.0 through 12.2.0, src/libImaging/Jpeg2KDecode.c accumulates total_component_width across every tile in a JPEG2000 image instead of recomputing it per tile, allowing a crafted tiled JPEG2000 file to force substantially higher transient memory usage and trigger out-of-memory failures during decoding. This issue is fixed in version 12.3.0.

7.5 /10

CVSS v3 : HIGH

V3 Legend

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/13ada41172142f2fd9f0906f615a00ea623a11ca Patch
https://github.com/python-pillow/Pillow/pull/9704 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-vjc4-5qp5-m44j Exploit Vendor Advisory
https://github.com/python-pillow/Pillow/security/advisories/GHSA-vjc4-5qp5-m44j Exploit Vendor Advisory
Configurations

Configuration 1 (hide)

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

21 Jul 2026, 19:17

Type Values Removed Values Added
References () https://github.com/python-pillow/Pillow/security/advisories/GHSA-vjc4-5qp5-m44j - Exploit, Vendor Advisory () https://github.com/python-pillow/Pillow/security/advisories/GHSA-vjc4-5qp5-m44j - Exploit, Vendor Advisory

14 Jul 2026, 20:10

Type Values Removed Values Added
References () https://github.com/python-pillow/Pillow/commit/13ada41172142f2fd9f0906f615a00ea623a11ca - () https://github.com/python-pillow/Pillow/commit/13ada41172142f2fd9f0906f615a00ea623a11ca - Patch
References () https://github.com/python-pillow/Pillow/pull/9704 - () https://github.com/python-pillow/Pillow/pull/9704 - Exploit, Issue Tracking, Patch
References () https://github.com/python-pillow/Pillow/releases/tag/12.3.0 - () https://github.com/python-pillow/Pillow/releases/tag/12.3.0 - Release Notes
References () https://github.com/python-pillow/Pillow/security/advisories/GHSA-vjc4-5qp5-m44j - () https://github.com/python-pillow/Pillow/security/advisories/GHSA-vjc4-5qp5-m44j - Exploit, Vendor Advisory
First Time Python
Python pillow
CWE CWE-770
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.5
CPE cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*

14 Jul 2026, 16:17

Type Values Removed Values Added
New CVE
Information

Published : 2026-07-14 16:17

Updated : 2026-07-21 19:17

NVD link : CVE-2026-59204

Mitre link : CVE-2026-59204

CVE.ORG link : CVE-2026-59204

JSON object : View

Products Affected

python

  • pillow
CWE
CWE-789

Memory Allocation with Excessive Size Value

CWE-770

Allocation of Resources Without Limits or Throttling