Detections
Analytics
CVE-2026-55380
high
Description
Pillow is a Python imaging library. Prior to 12.3.0, PIL/GdImageFile.py GdImageFile._open() read image dimensions from the GD 2.x header and stored them in self._size without calling Image._decompression_bomb_check(), allowing a crafted .gd file to trigger excessive C-heap allocation when loaded. This issue is fixed in version 12.3.0.
References
https://github.com/python-pillow/Pillow/security/advisories/GHSA-phj9-mv4w-65pm
https://github.com/python-pillow/Pillow/commit/f39b0ae6624eb2d7c5c5d651d9bb5fdbd96a8675
https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst