要点
- CVE-2026-40192 は pillow, pillow (python) に影響する深刻度「高」 (CVSS 7.5) の脆弱性です。
- 今後30日間に悪用される確率（EPSS）：0.67%（全脆弱性の 52.0% より高い）。
- 対処：12.2.0 以降に更新してください。
| パッケージ | 影響を受けるバージョン | 修正済みバージョン |
|---|
| pillow PyPI | ≥ 10.3.0, < 12.2.0
| 12.2.0
|
| pillow | ≥ 10.3.0, < 12.2.0
| 12.2.0
|
概要
Impact
Pillow did not limit the amount of GZIP-compressed data read when decoding a FITS image, making it vulnerable to decompression bomb attacks. A specially crafted FITS file could cause unbounded memory consumption, leading to denial of service (OOM crash or severe performance degradation).
Patches
The amount of data read is now limited to the necessary amount.
Fixed in Pillow 12.2.0 (PR #9521).
Workarounds
Avoid Pillow >= 10.3.0, < 12.2.0
Only open specific image formats, excluding FITS.
NVD の説明
Pillow is a Python imaging library. Versions 10.3.0 through 12.1.1 did not limit the amount of GZIP-compressed data read when decoding a FITS image, making them vulnerable to decompression bomb attacks. A specially crafted FITS file could cause unbounded memory consumption, leading to denial of service (OOM crash or severe performance degradation). If users are unable to immediately upgrade, they should only open specific image formats, excluding FITS, as a workaround.
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