CVE-2018-3821

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-03-30 · updated 2026-06-17
Weakness: CWE-79

Description

Kibana versions after 5.1.1 and before 5.6.7 and 6.1.3 had a cross-site scripting (XSS) vulnerability in the tag cloud visualization that could allow an attacker to obtain sensitive information from or perform destructive actions on behalf of other Kibana users.

Affected products

Kibana: from 5.1.1 (excl.) before 5.6.7; from 6.0.0 before 6.1.3 — fixed in 5.6.7, 6.1.3

How to fix

Upgrade to a fixed version: Kibana 5.6.7, 6.1.3. Check the vendor advisory for mitigations.

References

https://discuss.elastic.co/t/elastic-stack-6-1-3-and-5-6-7-security-update/117683
https://discuss.elastic.co/t/elastic-stack-6-1-3-and-5-6-7-security-update/117683

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