Elastic
Elastic Logstash: vulnerabilities and CVEs
Elastic Logstash has 15 published vulnerabilities, 2 of them in the last 12 months. 2 are rated critical and 0 are listed by CISA as actively exploited.
CVEs15
Last 12 months2
Critical2
Actively exploited0
All vulnerabilities in the catalogue →⭐ Follow this technology
Latest vulnerabilities
| CVE | Severity | EPSS | Active exploitation | Published | Description |
|---|---|---|---|---|---|
| CVE-2026-19671 | High (7.1) | 0.39% | — | Aug 18, 2026 | Malcolm's upload-processing pipeline (scripts/safe-extract.py) enforces entry-count, nesting-depth, and total-uncompressed-byte limits when extracting container archives (zip/tar/rar/7z via libarchive), but those limits… |
| CVE-2026-33466 | Critical (9.8) | 0.85% | — | Apr 8, 2026 | Improper Limitation of a Pathname to a Restricted Directory (CWE-22) in Logstash can lead to arbitrary file write and potentially remote code execution via Relative Path Traversal (CAPEC-139). The archive extraction… |
| CVE-2025-37730 | Medium (6.5) | 0.18% | — | May 6, 2025 | Improper certificate validation in Logstash's TCP output could lead to a man-in-the-middle (MitM) attack in “client” mode, as hostname verification in TCP output was not being performed when the ssl_verification_mode =>… |
| CVE-2023-46672 | Medium (5.5) | 0.34% | — | Nov 15, 2023 | An issue was identified by Elastic whereby sensitive information is recorded in Logstash logs under specific circumstances. The prerequisites for the manifestation of this issue are: |
| CVE-2021-22138 | Low (3.7) | 0.46% | — | May 13, 2021 | In Logstash versions after 6.4.0 and before 6.8.15 and 7.12.0 a TLS certificate validation flaw was found in the monitoring feature. When specifying a trusted server CA certificate Logstash would not properly verify the… |
| CVE-2019-7620 | High (7.5) | 2.1% | — | Oct 30, 2019 | Logstash 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 connect to the port the Logstash beats input could send a specially… |
| CVE-2019-7612 | Critical (9.8) | 2.4% | — | Mar 25, 2019 | A 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 as part of the Logstash configuration, the credentials for the URL… |
| CVE-2018-3817 | Medium (6.5) | 1.0% | — | Mar 30, 2018 | When logging warnings regarding deprecated settings, Logstash before 5.6.6 and 6.x before 6.1.2 could inadvertently log sensitive information. |
| CVE-2015-5619 | Medium (5.9) | 1.2% | — | Aug 9, 2017 | Logstash 1.4.x before 1.4.5 and 1.5.x before 1.5.4 with Lumberjack output or the Logstash forwarder does not validate SSL/TLS certificates from the Logstash server, which might allow attackers to obtain sensitive… |
| CVE-2015-5378 | High (7.5) | 2.5% | — | Jun 27, 2017 | Logstash 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 server. |
| CVE-2016-10363 | High (7.5) | 1.5% | — | Jun 16, 2017 | Logstash versions prior to 2.3.3, when using the Netflow Codec plugin, a remote attacker crafting malicious Netflow v5, Netflow v9 or IPFIX packets could perform a denial of service attack on the Logstash instance. The… |
| CVE-2016-1000222 | High (7.5) | 1.1% | — | Jun 16, 2017 | Logstash prior to version 2.1.2, the CSV output can be attacked via engineered input that will create malicious formulas in the CSV data. |
| CVE-2016-1000221 | High (7.5) | 1.8% | — | Jun 16, 2017 | Logstash prior to version 2.3.4, Elasticsearch Output plugin would log to file HTTP authorization headers which could contain sensitive information. |
| CVE-2015-4152 | Medium (6.4) | 3.0% | — | Jun 15, 2015 | Directory traversal vulnerability in the file output plugin in Elasticsearch Logstash before 1.4.3 allows remote attackers to write to arbitrary files via vectors related to dynamic field references in the path option. |
| CVE-2014-4326 | High (7.5) | 3.3% | — | Jul 22, 2014 | Elasticsearch 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 or (2) nagios_nsca.rb in outputs/. |
🎯 How it gets exploited (ATT&CK techniques)
Number of CVEs of this technology mapped to each exploitation or primary-impact technique.