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.

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/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

No history.

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

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