CVE-2026-96638

Pillow is a Python imaging library. From 9.1.0 until 13.0.0, BmpRleDecoder.decode() in src/PIL/BmpImagePlugin.py permits crafted RLE BMP delta escapes and absolute-mode runs to append beyond the remaining dest_length without a per-branch cap. A delta can add roughly 255 image rows in one iteration, so a kilobyte-sized file with a large but permitted width can expand the data bytearray to 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

27 Oct 2026, 14:25

Type Values Removed Values Added
References () https://github.com/python-pillow/Pillow/commit/e7794835e323ff2691d9b3a974cade1a44301b9a - () https://github.com/python-pillow/Pillow/commit/e7794835e323ff2691d9b3a974cade1a44301b9a - Patch
References () https://github.com/python-pillow/Pillow/pull/10015 - () https://github.com/python-pillow/Pillow/pull/10015 - 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-24rc-8hj2-v98c - () https://github.com/python-pillow/Pillow/security/advisories/GHSA-24rc-8hj2-v98c - Vendor Advisory
CPE cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*
First Time Python
Python pillow

21 Oct 2026, 21:20

Type Values Removed Values Added
New CVE

Information

Published : 2026-10-21 21:20

Updated : 2026-10-28 19:19


NVD link : CVE-2026-96638

Mitre link : CVE-2026-96638

CVE.ORG link : CVE-2026-96638


JSON object : View

Products Affected

python

  • pillow
CWE
CWE-400

Uncontrolled Resource Consumption

CWE-770

Allocation of Resources Without Limits or Throttling