What’s Vulnerable › Vulnerabilities

CVE-2018-3817

• Severity: medium (CVSS 6.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% 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-532

Description

When logging warnings regarding deprecated settings, Logstash before 5.6.6 and 6.x before 6.1.2 could inadvertently log sensitive information.

Affected products

• Elastic Logstash: before 5.6.6; from 6.0.0 before 6.1.2 — fixed in 5.6.6, 6.1.2

How to fix

Upgrade to a fixed version: Elastic Logstash 5.6.6, 6.1.2. Check the vendor advisory for mitigations.

References

• https://discuss.elastic.co/t/elastic-stack-6-1-2-and-5-6-6-security-update/115763
• https://discuss.elastic.co/t/elastic-stack-6-1-2-and-5-6-6-security-update/115763

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