CVE-2018-3823: Elastic Elasticsearch X-Pack

Medium severity, CVSS 5.4. EPSS: 0.6% chance of exploitation in the next 30 days.

X-Pack Machine Learning versions before 6.2.4 and 5.6.9 had a cross-site scripting (XSS) vulnerability. Users with manage_ml permissions could create jobs containing malicious data as part of their configuration that could allow the attacker to obtain sensitive information from or perform destructive actions on behalf of other ML users viewing the results of the jobs.

Affected products

• Elastic Elasticsearch X-Pack: before 5.6.9 (fixed in 5.6.9); from 6.0.0, before 6.2.4 (fixed in 6.2.4)
• Elastic Kibana X-Pack: before 5.6.9 (fixed in 5.6.9); from 6.0.0, before 6.2.4 (fixed in 6.2.4)
• Elastic Logstash X-Pack: before 5.6.9 (fixed in 5.6.9); from 6.1.0, before 6.2.4 (fixed in 6.2.4)

Published 2018-09-19. Last modified 2026-06-17.