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    CVE-2013-4304

    The CentralAuth extension for MediaWiki 1.19.x before 1.19.8, 1.20.x before 1.20.7, and 1.21.x before 1.21.2 caches a valid CentralAuthUser object in the centralauth_User cookie even when a user has not successfully logged in, which allows remote attackers to bypass authentication without a password.

    Published:Jan 26, 2014
    Last Modified:Apr 11, 2025
    EPS:Jan 26, 2014
    EPSS Score:0.00379
    CVSS Score:7.5

    Affected Products

    Vendor
    Brion Vibber
    Product
    Centralauth Extension
    Vendor
    Mediawiki
    Product
    Mediawiki

    Exploits

    https://bugzilla.wikimedia.org/show_bug.cgi?id=52338https://bugzilla.wikimedia.org/show_bug.cgi?id=52338

    Common Weakness Enumeration

    CWE-287 Improper Authentication

    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