CVE-2015-5501: Aegirproject Hostmaster

High severity, CVSS 7.5. EPSS: 2.4% chance of exploitation in the next 30 days.

The Hostmaster (Aegir) module 6.x-2.x before 6.x-2.4 and 7.x-3.x before 7.x-3.0-beta2 for Drupal allows remote attackers to execute arbitrary PHP code via a crafted file in the directory used to write Apache vhost files for hosted sites in a multi-site environment.

Affected products

• Aegirproject Hostmaster: version 6.x-2.0 only; version 6.x-2.1 only; version 6.x-2.2 only; version 6.x-2.3 only; version 6.x-3.0 only

Published 2015-08-18. Last modified 2026-06-17.