CVE-2015-4413

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.

• CWE-79

• http://packetstormsecurity.com/files/132425/WordPress-Nextend-Facebook-Connect-1.5.4-Cross-Site-Scripting.htmlExploit, Third Party Advisory, VDB Entry
• http://seclists.org/fulldisclosure/2015/Jun/70Exploit, Mailing List, Third Party Advisory
• http://www.securityfocus.com/bid/75391Third Party Advisory, VDB Entry
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=1178751%40nextend-facebook-connect&old=1060317%40nextend-facebook-connect&sfp_email=&sfph_mail=Patch, Third Party Advisory
• https://wordpress.org/plugins/nextend-facebook-connect/changelog/Release Notes, Third Party Advisory
• http://packetstormsecurity.com/files/132425/WordPress-Nextend-Facebook-Connect-1.5.4-Cross-Site-Scripting.htmlExploit, Third Party Advisory, VDB Entry
• http://seclists.org/fulldisclosure/2015/Jun/70Exploit, Mailing List, Third Party Advisory
• http://www.securityfocus.com/bid/75391Third Party Advisory, VDB Entry
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=1178751%40nextend-facebook-connect&old=1060317%40nextend-facebook-connect&sfp_email=&sfph_mail=Patch, Third Party Advisory
• https://wordpress.org/plugins/nextend-facebook-connect/changelog/Release Notes, Third Party Advisory

Published

Jun 24, 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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