CVE-2026-96636

Pillow is a Python imaging library. Prior to 13.0.0, MpoImageFile.seek() and DcxImageFile.seek() reparse later MPO or DCX frames and replace self._size without rerunning Image._decompression_bomb_check(). A crafted multi-frame image can use a tiny first frame to pass Image.open() and then declare an over-limit later frame. Normal frame iteration through seek(), load(), or ImageSequence.Iterator can decode that frame and commit hundreds of megabytes or more, causing memory-exhaustion denial of service. This issue is fixed in version 13.0.0.
Configurations

Configuration 1 (hide)

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

History

30 Oct 2026, 17:17

Type Values Removed Values Added
References () https://github.com/python-pillow/Pillow/security/advisories/GHSA-p8hx-v2p6-rp84 - Vendor Advisory () https://github.com/python-pillow/Pillow/security/advisories/GHSA-p8hx-v2p6-rp84 - Vendor Advisory

27 Oct 2026, 14:24

Type Values Removed Values Added
First Time Python
Python pillow
CPE cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*
References () https://github.com/python-pillow/Pillow/commit/f1acfc54c53502948d0d14121872061df931db48 - () https://github.com/python-pillow/Pillow/commit/f1acfc54c53502948d0d14121872061df931db48 - Patch
References () https://github.com/python-pillow/Pillow/pull/10011 - () https://github.com/python-pillow/Pillow/pull/10011 - Issue Tracking
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-p8hx-v2p6-rp84 - () https://github.com/python-pillow/Pillow/security/advisories/GHSA-p8hx-v2p6-rp84 - Vendor Advisory

21 Oct 2026, 21:20

Type Values Removed Values Added
New CVE

Information

Published : 2026-10-21 21:20

Updated : 2026-10-30 17:17


NVD link : CVE-2026-96636

Mitre link : CVE-2026-96636

CVE.ORG link : CVE-2026-96636


JSON object : View

Products Affected

python

  • pillow
CWE
CWE-400

Uncontrolled Resource Consumption

CWE-409

Improper Handling of Highly Compressed Data (Data Amplification)