Description
WordPress Plugin Default Facebook Thumbnails is prone to multiple vulnerabilities, including cross-site scripting and cross-site request forgery vulnerabilities. Exploiting these issues could allow an attacker to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site, allowing the attacker to steal cookie-based authentication credentials and launch other attacks or to perform certain administrative actions and gain unauthorized access to the affected application. WordPress Plugin Default Facebook Thumbnails version 0.4 is vulnerable; prior versions may also be affected.
Remediation
Edit the source code to ensure that input is properly sanitised and CSRF protection is implemented with Nonce-like mechanism or disable the plugin until a fix is available
References
Related Vulnerabilities
WordPress Plugin Kama Click Counter SQL Injection (3.4.9)
Drupal URL Redirection to Untrusted Site ('Open Redirect') Vulnerability (CVE-2015-2749)
LimeSurvey Improper Restriction of XML External Entity Reference Vulnerability (CVE-2019-16174)
WordPress Plugin Anti-Malware Security and Brute-Force Firewall Local File Inclusion (4.18.63)