CVE-2013-4136: Phusion Passenger

Medium severity, CVSS 4.4. EPSS: 0.3% chance of exploitation in the next 30 days.

ext/common/ServerInstanceDir.h in Phusion Passenger gem before 4.0.6 for Ruby allows local users to gain privileges or possibly change the ownership of arbitrary directories via a symlink attack on a directory with a predictable name in /tmp/.

Affected products

• Phusion Passenger: up to and including 4.0.5; version 4.0.1 only; version 4.0.2 only; version 4.0.3 only; version 4.0.4 only

Published 2013-09-30. Last modified 2026-06-16.