CVE-2026-112397

Pillow is a Python imaging library. Prior to 13.0.0, Pillow's ImageMorph.MorphOp.apply() can access memory before a row buffer for a zero-width image. PPM and PGM input can create an image with width zero, and the native morphology routine indexes outrow[width - 1] without rejecting that geometry. An attacker can supply such an image to an application that applies a morphology operation. This can crash the process. This issue is fixed in version 13.0.0.

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/18f7c0dfee93063c51db6ed0ca8c4da2999dcb64	Patch
https://github.com/python-pillow/Pillow/releases/tag/13.0.0	Release Notes
https://github.com/python-pillow/Pillow/security/advisories/GHSA-58r4-6rv3-gfh8	Exploit Vendor Advisory
https://github.com/python-pillow/Pillow/security/advisories/GHSA-58r4-6rv3-gfh8	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

27 Oct 2026, 21:00

Type	Values Removed	Values Added
References	~~() https://github.com/python-pillow/Pillow/commit/18f7c0dfee93063c51db6ed0ca8c4da2999dcb64 -~~	() https://github.com/python-pillow/Pillow/commit/18f7c0dfee93063c51db6ed0ca8c4da2999dcb64 - Patch
References	~~() https://github.com/python-pillow/Pillow/releases/tag/13.0.0 -~~	() https://github.com/python-pillow/Pillow/releases/tag/13.0.0 - Release Notes
References	~~() https://github.com/python-pillow/Pillow/security/advisories/GHSA-58r4-6rv3-gfh8 -~~	() https://github.com/python-pillow/Pillow/security/advisories/GHSA-58r4-6rv3-gfh8 - Exploit, Vendor Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5
First Time		Python Python pillow
CPE		cpe:2.3:a:python:pillow::::::::

19 Oct 2026, 22:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-19 22:17

Updated : 2026-10-27 21:00

NVD link : CVE-2026-112397

Mitre link : CVE-2026-112397

CVE.ORG link : CVE-2026-112397

JSON object : View

Products Affected

python

pillow

CWE

CWE-787

Out-of-bounds Write

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