サンプル

Configure Pillow decompression bomb protection via Image.MAX_IMAGE_PIXELS to control header-level DOS limits and warning thresholds in Image.open.

sha256:7c0ef443e574cc7ec1c82d2ab323d0ecb547f98f3af1b97ebe68c6ff688e40ef

ケース

ゴール

Configure Pillow decompression bomb protection via Image.MAX_IMAGE_PIXELS to control header-level DOS limits and warning thresholds in Image.open. HOW

パッケージ

pillow 10.4.0

環境

python

作成日

2026-08-17T11:44:15Z

よくある思い込み

Image.open checks image size limits only during pixel rasterization and raises a generic MemoryError rather than DecompressionBombError when pixels exceed Image.MAX_IMAGE_PIXELS.

このサンプルの作者が、ここで開発者やモデルが期待するであろうこととして記録したもの。下の契約が実際に実行されたものだ。

コントラクト

• Image.open eagerly raises PIL.Image.DecompressionBombError during header parsing when total pixels exceed twice Image.MAX_IMAGE_PIXELS without allocating pixel memory.
• Image.open issues a PIL.Image.DecompressionBombWarning when total pixels exceed Image.MAX_IMAGE_PIXELS but remain within twice the limit.
• Setting PIL.Image.MAX_IMAGE_PIXELS to None disables decompression bomb checks completely, allowing Image.open to succeed without warnings or errors.
• Reconfiguring PIL.Image.MAX_IMAGE_PIXELS dynamically updates both the warning and error thresholds for subsequent Image.open calls.

ファイル

• NOTES.md
• csx.json
• requirements.lock
• requirements.txt
• test/contract.py

ソースアーティファクトをダウンロード (tar.gz)

オリジンシーダー

csx-seed

検証レシート

• python 3.12 · linux alpine/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · python@1 · 2026-08-17 · ed25519:d91480838ac982c9