CVE-2026-54060

Pillow is a Python imaging library. Prior to 12.3.0, PIL/FontFile.py FontFile.compile() assembled per-glyph images into a combined bitmap with Image.new("1", (xsize, ysize)) without calling Image._decompression_bomb_check(), allowing a font to trigger excessive allocation during conversion or saving. This issue is fixed in version 12.3.0.

• pillow [trixie] - pillow (Minor issue) [bookworm] - pillow (Minor issue) [bullseye] - pillow (Minor issue) https://github.com/python-pillow/Pillow/security/advisories/GHSA-5x94-69rx-g8h2 Fixed by: https://github.com/python-pillow/Pillow/commit/0a263e6264aa5399988d9acd3bbfbca2ca3ec77d (12.3.0)