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
WordPress 5.1.x Multiple Vulnerabilities (5.1 - 5.1.13)
PHP Out-of-bounds Read Vulnerability (CVE-2019-11050)
Atlassian Jira Exposure of Resource to Wrong Sphere Vulnerability (CVE-2021-39127)
WordPress Cross-Site Request Forgery (CSRF) Vulnerability (CVE-2014-5204)
WordPress Improper Input Validation Vulnerability (CVE-2019-20041)