Out-of-bounds Read Vulnerability in Pillow Imaging Library
CVE-2026-112896

8.8HIGH

Key Information:

Vendor

Python-pillow

Status
Pillow
Vendor
CVE Published:
19 October 2026

What is CVE-2026-112896?

The Pillow imaging library, widely used in Python applications, has a vulnerability in its TIFF encoder prior to version 13.0.0. This issue arises when the ColorMap buffer retention is inconsistently set with the BitsPerSample, allowing a crafted TIFF image to potentially read beyond its allocated space. When an application re-encodes such an image using libtiff, it may disclose sensitive heap memory or even crash the process, leading to external exploitation risks.

Affected Version(s)

Pillow < 13.0.0

References

https://github.com/python-pillow/Pillow/security/advisori...
x_refsource_CONFIRM
https://github.com/python-pillow/Pillow/commit/d03dc3c587...
x_refsource_MISC
https://github.com/python-pillow/Pillow/releases/tag/13.0.0
x_refsource_MISC

CVSS V4

Score:
8.8
Severity:
HIGH
Confidentiality:
Low
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.