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CVE-2026-55379 Pillow is a Python imaging library

Description

Pillow is a Python imaging library. Prior to 12.3.0, PIL/BdfFontFile.py bdf_char() read the BBX width and height field from a BDF font file and passed attacker-controlled dimensions to Image.new() without calling Image._decompression_bomb_check(), bypassing Pillow's documented decompression bomb protection and allowing excessive memory allocation. This issue is fixed in version 12.3.0.

Affected products and versions

Product Affected versions Fixed in
Pillow 12.3 earliest → < 12.3.0 12.3.0

References

Timeline

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