Description
WordPress Plugin External Media without Import is prone to a cross-site scripting vulnerability because it fails to properly sanitize user-supplied input. An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks. WordPress Plugin External Media without Import version 1.0.1 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 1.0.2 or latest
References
https://github.com/zzxiang/external-media-without-import/pull/3
https://plugins.svn.wordpress.org/external-media-without-import/trunk/readme.txt
Related Vulnerabilities
Drupal Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2017-6926)
Drupal Permissions, Privileges, and Access Controls Vulnerability (CVE-2008-3742)
WordPress Plugin Contextual Related Posts Multiple Vulnerabilities (3.3.1)
WordPress Plugin Contact Form Unspecified Vulnerability (1.2)
MediaWiki Improper Input Validation Vulnerability (CVE-2011-1580)