CVE-2021-30153

    Dashboard / Vulnerabilities / CVE-2021-30153

    CVE-2021-30153

    Published: 15 Apr 2023Last Modified: 9 Jul 2026

    Summary:

    Details: An issue was discovered in the VisualEditor extension in MediaWiki before 1.31.13, and 1.32.x through 1.35.x before 1.35.2. . When using VisualEditor to edit a MediaWiki user page belonging to an existing, but hidden, user, VisualEditor will disclose that the user exists. (It shouldn't because they are hidden.) This is related to ApiVisualEditor.

    References: https://lists.wikimedia.org/hyperkitty/list/wikitech-l%40lists.wikimedia.org/message/XYBF5RSTJRMVCP7QBYK7643W75A3KCIY/, https://lists.wikimedia.org/pipermail/wikitech-l/2021-April/094418.html, https://phabricator.wikimedia.org/T270453

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -dc63efabf7afc624f5e1f06478b91182bfecaad4

    Affected versions

    1.31.12
    1.31.11
    1.31.8
    1.31.10
    1.31.9
    1.31.7
    1.31.6
    1.31.5
    1.31.4
    1.31.3
    1.31.2
    1.31.1
    1.31.0
    1.31.0-rc.2
    1.31.0-rc.1
    1.31.0-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-2021-30153 | CVE-DB