CVE-2018-3824: Elastic Elasticsearch X-Pack

Medium severity, CVSS 6.1. EPSS: 0.9% 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. If an attacker is able to inject data into an index that has a ML job running against it, then when another user views the results of the ML job it could allow the attacker to obtain sensitive information from or perform destructive actions on behalf of that other ML user.

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.