Description
Drupal Core is prone to a mail header injection vulnerability. Exploiting this issue could allow an attacker to use a vulnerable Drupal site to send unwanted emails. Drupal Core versions 4.6.x ranging from 4.6.0 and up to and including 4.6.5 are vulnerable.
Remediation
Update to Drupal Core version 4.6.6 or latest
References
Related Vulnerabilities
Jenkins Improper Input Validation Vulnerability (CVE-2013-0331)
WordPress Plugin Adminer Cross-Site Scripting (1.4.2)
Drupal Cross-Site Request Forgery (CSRF) Vulnerability (CVE-2007-5594)
OpenSSL Numeric Errors Vulnerability (CVE-2015-1794)
WordPress Plugin Instagram Feed Unspecified Vulnerability (1.11.3)