Cross-site scripting (XSS) vulnerability in the theme-name fallback functionality in wp-includes/class-wp-theme.php in WordPress before 4.7.1 allows remote attackers to inject arbitrary web script or HTML via a crafted directory name of a theme, related to wp-admin/includes/class-theme-installer-skin.php.

References

• https://nvd.nist.gov/vuln/detail/CVE-2017-5490
• WordPress/WordPress@ce7fb29
• https://codex.wordpress.org/Version_4.7.1
• https://wordpress.org/news/2017/01/wordpress-4-7-1-security-and-maintenance-release/
• https://wpvulndb.com/vulnerabilities/8718
• https://www.mehmetince.net/low-severity-wordpress/
• http://www.debian.org/security/2017/dsa-3779
• http://www.openwall.com/lists/oss-security/2017/01/14/6
• http://www.securityfocus.com/bid/95402
• http://www.securitytracker.com/id/1037591