CVE-2021-31545

    Dashboard / Vulnerabilities / CVE-2021-31545

    CVE-2021-31545

    Published: 22 Apr 2021Last Modified: 9 Jul 2026

    Summary:

    Details: An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. The page_recent_contributors leaked the existence of certain deleted MediaWiki usernames, related to rev_deleted.

    References: https://phabricator.wikimedia.org/T71367, https://gerrit.wikimedia.org/r/q/I8d5ed9ca84282ee50832035af86123633fc88293

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.35.2
    1.35.1
    1.35.0
    1.35.0-rc.3
    1.35.0-rc.2
    1.35.0-rc.1
    1.35.0-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-2021-31545 | CVE-DB