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    CVE-2009-2335

    WordPress and WordPress MU before 2.8.1 exhibit different behavior for a failed login attempt depending on whether the user account exists, which allows remote attackers to enumerate valid usernames. NOTE: the vendor reportedly disputes the significance of this issue, indicating that the behavior exists for "user convenience."

    Published:Jul 8, 2009
    Last Modified:Apr 23, 2026
    EPS:Jul 10, 2009
    EPSS Score:0.85338
    CVSS Score:5

    Affected Products

    Vendor
    Wordpress
    Product
    Wordpress
    Vendor
    Wordpress
    Product
    Wordpress Mu

    Exploits

    http://corelabs.coresecurity.com/index.php?action=view&type=advisory&name=WordPress_Privileges_Uncheckedhttp://corelabs.coresecurity.com/index.php?action=view&type=advisory&name=WordPress_Privileges_Uncheckedhttps://www.exploit-db.com/exploits/17702

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-84819 (CVSS 7.1) — Unauthenticated Cross Site Scripting (XSS) in WPAdverts <= 2.3.3 versions.…
    CVE-2026-84816 (CVSS 7.1) — Unauthenticated Cross Site Scripting (XSS) in WPCS <= 1.3.2 versions.…
    CVE-2026-81803 (CVSS 7.5) — Subscriber Remote Code Execution (RCE) in RepairBuddy <= 4.1224 versions.…
    CVE-2026-81799 (CVSS 7.5) — Unauthenticated Broken Access Control in Return Refund and Exchange For WooCommerce <= 4.6.4 versions.…
    CVE-2026-81796 (CVSS 7.3) — Unauthenticated Broken Authentication in WP Travel <= 12.0.3 versions.…
    CVE-2026-81793 (CVSS 6.5) — Unauthenticated Broken Access Control in Salon booking system <= 10.31.5 versions.…
    CVE-2026-81788 (CVSS 6.3) — Subscriber Broken Access Control in IMPress for IDX Broker <= 3.3.0 versions.…
    CVE-2026-81787 (CVSS 6.5) — Unauthenticated Broken Authentication in IMPress for IDX Broker <= 3.3.0 versions.…

    References

    http://corelabs.coresecurity.com/index.php?action=view&type=advisory&name=WordPress_Privileges_Unchecked
    http://securitytracker.com/id?1022528
    http://www.exploit-db.com/exploits/9110
    http://www.osvdb.org/55713
    http://www.securityfocus.com/archive/1/504795/100/0/threaded
    http://www.securityfocus.com/bid/35581
    http://www.vupen.com/english/advisories/2009/1833
    https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00597.html
    https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00608.html
    https://www.redhat.com/archives/fedora-package-announce/2009-July/msg00632.html
    https://www.redhat.com/archives/fedora-package-announce/2009-July/msg00676.html
    http://corelabs.coresecurity.com/index.php?action=view&type=advisory&name=WordPress_Privileges_Unchecked
    http://securitytracker.com/id?1022528
    http://www.exploit-db.com/exploits/9110
    http://www.osvdb.org/55713
    http://www.securityfocus.com/archive/1/504795/100/0/threaded
    http://www.securityfocus.com/bid/35581
    http://www.vupen.com/english/advisories/2009/1833
    https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00597.html
    https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00608.html
    https://www.redhat.com/archives/fedora-package-announce/2009-July/msg00632.html
    https://www.redhat.com/archives/fedora-package-announce/2009-July/msg00676.html

    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