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    CVE-2026-55380

    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.

    Published:Jul 6, 2026
    Last Modified:Jul 7, 2026
    EPS:Jul 6, 2026
    EPSS Score:0.00342
    CVSS Score:7.5

    Affected Products

    Vendor
    Python-pillow
    Product
    Pillow

    Exploits

    https://github.com/python-pillow/Pillow/security/advisories/GHSA-phj9-mv4w-65pmhttps://github.com/python-pillow/Pillow/security/advisories/GHSA-phj9-mv4w-65pm

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    Common Vulnerability Scoring System

    Attack Vector
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    User Interaction
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    Integrity
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