CVE-2021-42042

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    CVE-2021-42042

    Published: 6 Oct 2021Last Modified: 8 Jul 2026

    Summary:

    Details: An issue was discovered in SpecialEditGrowthConfig in the GrowthExperiments extension in MediaWiki through 1.36.2. The growthexperiments-edit-config-error-invalid-title MediaWiki message was not being properly sanitized and allowed for the injection and execution of HTML and JavaScript.

    References: https://gerrit.wikimedia.org/r/q/Ibeb13d032ca044af53f6b2334e27b6b97b6f4e9f, https://phabricator.wikimedia.org/T290692

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.36.2
    1.36.1
    1.36.0
    1.36.0-rc.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
    CVE-2021-42042 | CVE-DB