Improper Handling of Highly Compressed Data (Data Amplification) Affecting python-pillow package, versions <0:2.0.0-23.gitd1c6db8.amzn2.0.19


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.41% (34th percentile)

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  • Snyk IDSNYK-AMZN2-PYTHONPILLOW-18059929
  • published21 Jul 2026
  • disclosed6 Jul 2026

Introduced: 6 Jul 2026

CVE-2026-54059  (opens in a new tab)
CWE-409  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 python-pillow to version 0:2.0.0-23.gitd1c6db8.amzn2.0.19 or higher.
This issue was patched in ALAS2-2026-3816.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-pillow package and not the python-pillow package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

Pillow is a Python imaging library. Prior to 12.3.0, PIL/PcfFontFile.py _load_bitmaps() read glyph dimensions from the PCF METRICS section and passed them directly to Image.frombytes() without calling Image._decompression_bomb_check(), allowing crafted PCF font data to cause excessive memory allocation. This issue is fixed in version 12.3.0.

CVSS Base Scores

version 3.1