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    CVE-2026-46338

    PyMdown Extensions is a set of extensions for the Python-Markdown markdown project. From 10.0.1 until 10.21.3, pymdownx.snippets uses a string-prefix containment check in SnippetPreprocessor.get_snippet_path() in pymdownx/snippets.py when `restrict_base_path: True`, allowing markdown snippet directives to read files from sibling paths that share the same base_path prefix, such as docs and docs_internal. This is a regression of CVE-2023-32309. This issue is fixed in version 10.21.3.

    Published:Jul 16, 2026
    Last Modified:Jul 17, 2026
    EPS:Jul 16, 2026
    EPSS Score:0.00261
    CVSS Score:4.3

    Affected Products

    Vendor
    Facelessuser
    Product
    Pymdown Extensions

    Exploits

    https://github.com/facelessuser/pymdown-extensions/security/advisories/GHSA-62q4-447f-wv8hhttps://github.com/facelessuser/pymdown-extensions/security/advisories/GHSA-62q4-447f-wv8h

    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