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    CVE-2026-59204

    Pillow is a Python imaging library. From 8.2.0 through 12.2.0, src/libImaging/Jpeg2KDecode.c accumulates total_component_width across every tile in a JPEG2000 image instead of recomputing it per tile, allowing a crafted tiled JPEG2000 file to force substantially higher transient memory usage and trigger out-of-memory failures during decoding. This issue is fixed in version 12.3.0.

    Published:Jul 14, 2026
    Last Modified:Jul 21, 2026
    EPS:Jul 14, 2026
    EPSS Score:0.00398
    CVSS Score:7.5

    Affected Products

    Vendor
    Python-pillow
    Product
    Pillow

    Exploits

    https://github.com/python-pillow/Pillow/pull/9704https://github.com/python-pillow/Pillow/security/advisories/GHSA-vjc4-5qp5-m44jhttps://github.com/python-pillow/Pillow/security/advisories/GHSA-vjc4-5qp5-m44j

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-100 Overflow Buffers
    CAPEC-47 Buffer Overflow via Parameter Expansion

    Related CVEs

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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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