CVE-2018-3779: Activesupport Project Activesupport

Critical severity, CVSS 9.8. EPSS: 6.1% chance of exploitation in the next 30 days.

active-support ruby gem 5.2.0 could allow a remote attacker to execute arbitrary code on the system, caused by containing a malicious backdoor. An attacker could exploit this vulnerability to execute arbitrary code on the system.

Affected products

• Activesupport Project Activesupport: version 5.2.0 only

Published 2018-08-10. Last modified 2026-06-17.