CVE-2015-5730

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.

• CWE-200

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

Published

Nov 9, 2015

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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