Description In Moodle 2.x and 3.x, text injection can occur in email headers, potentially leading to outbound spam. Remediation References CVE-2016-5013 Related Vulnerabilities Serendipity Cross-Site Request Forgery (CSRF) Vulnerability (CVE-2017-5476) WordPress 3.9.x Multiple Vulnerabilities (3.9 - 3.9.34) MediaWiki Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2013-4301) Atlassian Jira CVE-2019-11583 Vulnerability (CVE-2019-11583) Drupal Core 8.5.x Multiple Vulnerabilities (8.5.0 - 8.5.7) Severity Medium Classification CVE-2016-5013 CWE-138 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N Tags Missing Update Known Vulnerabilities