CVE-2018-3823

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-09-19 · updated 2026-06-17
Weakness: CWE-79

Description

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

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

How to fix

Upgrade to a fixed version: Elasticsearch X-Pack 5.6.9, 6.2.4; Elastic Kibana X-Pack 5.6.9, 6.2.4; Elastic Logstash X-Pack 5.6.9, 6.2.4. Check the vendor advisory for mitigations.

References

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