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Vulnerability record · CVE-2018-3817 · published 30 March 2018

CVE-2018-3817: Elastic logstash sensitive information in log file vulnerability

Elastic · Logstash

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

6.5 CVSS 3.0 Medium EPSS 1.0% · top 38.1% CWE-532 · Sensitive information in log fileCWE-200 · Information exposure
6.5CVSS 3.0 base score, v2 4.0
1.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

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

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-33466Elastic logstash path traversal vulnerabilityImproper Limitation of a Pathname to a Restricted Directory (CWE-22) in Logstash can lead to arbitrary file write and potentially remote code executi…EPSS 0.85%9.8CVE-2019-7612Elastic logstash error message information leak vulnerabilityA sensitive data disclosure flaw was found in the way Logstash versions before 5.6.15 and 6.6.1 logs malformed URLs. If a malformed URL is specified …EPSS 2.4%7.5CVE-2019-7620Elastic logstash uncontrolled resource consumption vulnerabilityLogstash versions before 7.4.1 and 6.8.4 contain a denial of service flaw in the Logstash Beats input plugin. An unauthenticated user who is able to …EPSS 2.1%7.5CVE-2015-5378Elastic logstash information exposure vulnerabilityLogstash 1.5.x before 1.5.3 and 1.4.x before 1.4.4 allows remote attackers to read communications between Logstash Forwarder agent and Logstash serve…EPSS 2.5%7.5CVE-2016-1000221Elastic logstash information exposure vulnerabilityLogstash prior to version 2.3.4, Elasticsearch Output plugin would log to file HTTP authorization headers which could contain sensitive information.EPSS 1.8%7.5CVE-2016-1000222Elastic logstash argument injection vulnerabilityLogstash prior to version 2.1.2, the CSV output can be attacked via engineered input that will create malicious formulas in the CSV data.EPSS 1.1%7.5CVE-2016-10363Elastic logstash improper resource shutdown vulnerabilityLogstash versions prior to 2.3.3, when using the Netflow Codec plugin, a remote attacker crafting malicious Netflow v5, Netflow v9 or IPFIX packets c…EPSS 1.5%7.5CVE-2014-4326Elastic logstash os command injection vulnerabilityElasticsearch Logstash 1.0.14 through 1.4.x before 1.4.2 allows remote attackers to execute arbitrary commands via a crafted event in (1) zabbix.rb o…EPSS 3.3%

Source: NIST National Vulnerability Database (record CVE-2018-3817), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.