What’s Vulnerable › Vulnerabilities

CVE-2015-5730

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 7.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2015-11-09 · updated 2026-06-17
• Weakness: CWE-200

Description

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.

Affected products

• WordPress: through 4.2.3

References

• 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_4.2.4
• 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/
• 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

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