CVE-2021-44857

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    CVE-2021-44857

    Published: 17 Dec 2021Last Modified: 9 Jul 2026

    Summary:

    Details: An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. It is possible to use action=mcrundo followed by action=mcrrestore to replace the content of any arbitrary page (that the user doesn't have edit rights for). This applies to any public wiki, or a private wiki that has at least one page set in $wgWhitelistRead.

    References: https://phabricator.wikimedia.org/T297322, https://security.gentoo.org/glsa/202305-24, https://www.mediawiki.org/wiki/2021-12_security_release/FAQ

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -8b874ff6c6ed5f209dfd0c825c5b310ef1ecca2f

    Affected versions

    1.37.0

    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-2021-44857 | CVE-DB