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    CVE-2026-4224

    When an Expat parser with a registered ElementDeclHandler parses an inline document type definition containing a deeply nested content model a C stack overflow occurs.

    Published:Mar 16, 2026
    Last Modified:Aug 5, 2026
    EPS:Mar 16, 2026
    EPSS Score:0.00621
    CVSS Score:7.5

    Affected Products

    Vendor
    Python
    Product
    Cpython
    Vendor
    Python
    Product
    Python

    Exploits

    No exploit reference

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    Common Vulnerability Scoring System

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