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CVE-2026-54059

Pillow: PcfFontFile._load_bitmaps()`: `Image.frombytes()` called without `_decompression_bomb_check()` — bomb protection bypass via PCF font loading PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
python-pillow / Pillowaffected < 12.3.0

CWE

CWE-789

References

ADP enrichment

CISA-ADP

No English description supplied.