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    CVE-2026-42310

    Pillow is a Python imaging library. From version 4.2.0 to before version 12.2.0, an attacker can supply a malicious PDF that causes the process to hang indefinitely, consuming 100% CPU and making the application unresponsive. This issue has been patched in version 12.2.0.

    Published:May 9, 2026
    Last Modified:May 12, 2026
    EPS:May 9, 2026
    EPSS Score:0.00014
    CVSS Score:5.5

    Affected Products

    Vendor
    Python
    Product
    Pillow
    Vendor
    Python-pillow
    Product
    Pillow

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-42311 (CVSS 8.6) — Pillow is a Python imaging library. From version 10.3.0 to before version 12.2.0, processing a malicious PSD f…
    CVE-2026-42308 (CVSS 5.1) — Pillow is a Python imaging library. Prior to version 12.2.0, if a font advances for each glyph by an exceeding…
    CVE-2026-42309 (CVSS 5.1) — Pillow is a Python imaging library. From version 11.2.1 to before version 12.2.0, passing nested lists as coor…
    CVE-2026-40192 (CVSS 8.7) — Pillow is a Python imaging library. Versions 10.3.0 through 12.1.1 did not limit the amount of GZIP-compressed…
    CVE-2026-25990 (CVSS 8.6) — Pillow is a Python imaging library. From 10.3.0 to before 12.1.1, an out-of-bounds write may be triggered when…
    CVE-2025-48379 (CVSS 7.1) — Pillow is a Python imaging library. In versions 11.2.0 to before 11.3.0, there is a heap buffer overflow when …
    CVE-2024-28219 (CVSS 6.7) — In _imagingcms.c in Pillow before 10.3.0, a buffer overflow exists because strcpy is used instead of strncpy.…
    CVE-2023-50447 (CVSS 8.1) — Pillow through 10.1.0 allows PIL.ImageMath.eval Arbitrary Code Execution via the environment parameter, a diff…
    CVE-2023-44271 (CVSS 7.5) — An issue was discovered in Pillow before 10.0.0. It is a Denial of Service that uncontrollably allocates memor…
    CVE-2022-45199 (CVSS 7.5) — Pillow before 9.3.0 allows denial of service via SAMPLESPERPIXEL.…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High