CVE-2015-4413: Nextendweb Facebook Connect

Medium severity, CVSS 4.3. EPSS: 2.7% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerability in the new_fb_sign_button function in nextend-facebook-connect.php in Nextend Facebook Connect plugin before 1.5.6 for WordPress allows remote attackers to inject arbitrary web script or HTML via the redirect_to parameter.

Affected products

• Nextendweb Facebook Connect: before 1.5.6 (fixed in 1.5.6)

Published 2015-06-24. Last modified 2026-06-17.