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    CVE-2025-46656

    python-markdownify (aka markdownify) before 0.14.1 allows large headline prefixes such as <h9999999> in addition to <h1> through <h6>. This causes memory consumption.

    Published:Apr 26, 2025
    Last Modified:Oct 16, 2025
    EPS:Apr 26, 2025
    EPSS Score:0.00023
    CVSS Score:2.9

    Affected Products

    Vendor
    Matthewwithanm
    Product
    Markdownify

    Exploits

    https://github.com/matthewwithanm/python-markdownify/issues/143https://github.com/matthewwithanm/python-markdownify/issues/143

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    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