Pillow GdImageFile decompression bomb protection bypass
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.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-55380US | — | — | ||
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 calli… | ||||
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references
External citations — patches, advisories, analysis.
- https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rstARTICLE
- https://github.com/python-pillow/Pillow/commit/f39b0ae6624eb2d7c5c5d651d9bb5fdbd96a8675FIX
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-phj9-mv4w-65pmADVISORY
- https://nvd.nist.gov/vuln/detail/CVE-2026-55380WEB
scry
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