CVE-2014-4326: Elastic Logstash

High severity, CVSS 7.5. EPSS: 3.3% chance of exploitation in the next 30 days.

Elasticsearch Logstash 1.0.14 through 1.4.x before 1.4.2 allows remote attackers to execute arbitrary commands via a crafted event in (1) zabbix.rb or (2) nagios_nsca.rb in outputs/.

Affected products

• Elastic Logstash: version 1.0.14 only; version 1.0.15 only; version 1.0.16 only; version 1.0.17 only; version 1.1.0 only; version 1.1.0.1 only; …

Published 2014-07-22. Last modified 2026-06-17.