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    CVE-2026-39937

    Improper removal of sensitive information before storage or transfer vulnerability in The Wikimedia Foundation Mediawiki - CentralAuth Extension allows Resource Leak Exposure. The issue has been remediated on the `master` branch, and in the release branches for MediaWiki versions 1.43, 1.44, and 1.45.

    Published:Apr 7, 2026
    Last Modified:Apr 9, 2026
    EPS:Apr 7, 2026
    EPSS Score:0.00042
    CVSS Score:8.8

    Affected Products

    Vendor
    Wikimedia
    Product
    Mediawiki - Centralauth Extension

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-168 Windows ::DATA Alternate Data Stream

    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