CVE-2019-10905

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    CVE-2019-10905

    Published: 6 Apr 2019Last Modified: 8 Jul 2026

    Summary:

    Details: Parsedown before 1.7.2, when safe mode is used and HTML markup is disabled, might allow attackers to execute arbitrary JavaScript code if a script (already running on the affected page) executes the contents of any element with a specific class. This occurs because spaces are permitted in code block infostrings, which interferes with the intended behavior of a single class name beginning with the language- substring.

    References: https://github.com/erusev/parsedown/releases/tag/1.7.2, https://github.com/erusev/parsedown/issues/699

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -d60bcdc46978357759ecb13cb4b078da783f8faf

    Affected versions

    1.7.1
    1.7.0

    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