UBUNTU-CVE-2020-35477

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    UBUNTU-CVE-2020-35477

    Published: 18 Dec 2020Last Modified: 17 Oct 2026
    Upstream:
    CVE-2020-35477

    Summary:

    Details: MediaWiki before 1.35.1 blocks legitimate attempts to hide log entries in some situations. If one sets MediaWiki:Mainpage to Special:MyLanguage/Main Page, visits a log entry on Special:Log, and toggles the "Change visibility of selected log entries" checkbox (or a tags checkbox) next to it, there is a redirection to the main page's action=historysubmit (instead of the desired behavior in which a revision-deletion form appears).

    References: https://ubuntu.com/security/CVE-2020-35477, https://phabricator.wikimedia.org/T205908, https://lists.wikimedia.org/pipermail/wikitech-l/2020-December/094126.html, https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html, https://www.cve.org/CVERecord?id=CVE-2020-35477

    Affected packages

    Package

    Name: mediawiki

    Purl: pkg:deb/ubuntu/mediawiki?arch=source&distro=bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1:1.27.3-1
    1:1.27.4-1
    1:1.27.4-2
    1:1.27.4-3

    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
    UBUNTU-CVE-2020-35477 | CVE-DB