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    CVE-2026-102996

    pypdf is a free and open-source pure-python PDF library. Prior to 6.18.1, a crafted PDF can provide a TrueType or Type1 simple font with an unusually large /Widths array, causing pypdf/_font.py Font._collect_tt_t1_character_widths to process entries beyond the 256 character codes meaningful for a simple font and consume excessive memory during operations such as text extraction. This issue is fixed in version 6.18.1.

    Published:Sep 30, 2026
    Last Modified:Oct 5, 2026
    EPS:Sep 30, 2026
    EPSS Score:0.00301
    CVSS Score:7.5

    Affected Products

    Vendor
    Py-pdf
    Product
    Pypdf
    Vendor
    Pypdf Project
    Product
    Pypdf

    Exploits

    No exploit reference

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    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