CVE-2016-10034: Zend Zend-Mail

Critical severity, CVSS 9.8. EPSS: 38.4% chance of exploitation in the next 30 days.

The setFrom function in the Sendmail adapter in the zend-mail component before 2.4.11, 2.5.x, 2.6.x, and 2.7.x before 2.7.2, and Zend Framework before 2.4.11 might allow remote attackers to pass extra parameters to the mail command and consequently execute arbitrary code via a \" (backslash double quote) in a crafted e-mail address.

Affected products

• Zend Zend-Mail: up to and including 2.4.10; version 2.5.0 only; version 2.5.1 only; version 2.5.2 only; version 2.6.0 only; version 2.6.1 only; …
• Zend Zend Framework: up to and including 2.4.10

Published 2016-12-30. Last modified 2026-06-17.