CVE-2015-5730

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    CVE-2015-5730

    Published: 9 Nov 2015Last Modified: 16 Apr 2026

    Summary:

    Details: The sanitize_widget_instance function in wp-includes/class-wp-customize-widgets.php in WordPress before 4.2.4 does not use a constant-time comparison for widgets, which allows remote attackers to conduct a timing side-channel attack by measuring the delay before inequality is calculated.

    References: http://www.debian.org/security/2015/dsa-3332, https://codex.wordpress.org/Version_4.2.4, https://wordpress.org/news/2015/08/wordpress-4-2-4-security-and-maintenance-release/, https://codex.wordpress.org/Version_4.2.4, https://wordpress.org/news/2015/08/wordpress-4-2-4-security-and-maintenance-release/, http://openwall.com/lists/oss-security/2015/08/04/7, http://www.securityfocus.com/bid/76160, http://www.securitytracker.com/id/1033178, https://core.trac.wordpress.org/changeset/33535, https://core.trac.wordpress.org/changeset/33536, https://wpvulndb.com/vulnerabilities/8130

    Affected packages

    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-2015-5730 | CVE-DB