Vulnerability Details CVE-2026-33466
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 utilities used by Logstash do not properly validate file paths within compressed archives. An attacker who can serve a specially crafted archive to Logstash through a compromised or attacker-controlled update endpoint can write arbitrary files to the host filesystem with the privileges of the Logstash process. In certain configurations where automatic pipeline reloading is enabled, this can be escalated to remote code execution.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 61.1%
CVSS Severity
CVSS v3 Score 8.1
References
Products affected by CVE-2026-33466
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cpe:2.3:a:elastic:logstash:8.0.0
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cpe:2.3:a:elastic:logstash:8.0.1
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cpe:2.3:a:elastic:logstash:8.1.0
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cpe:2.3:a:elastic:logstash:8.1.1
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cpe:2.3:a:elastic:logstash:8.1.2
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cpe:2.3:a:elastic:logstash:8.1.3
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cpe:2.3:a:elastic:logstash:8.10.0
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cpe:2.3:a:elastic:logstash:8.10.1
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cpe:2.3:a:elastic:logstash:8.10.2
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cpe:2.3:a:elastic:logstash:8.10.3
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cpe:2.3:a:elastic:logstash:8.10.4
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cpe:2.3:a:elastic:logstash:8.11.0
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cpe:2.3:a:elastic:logstash:8.11.1
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cpe:2.3:a:elastic:logstash:8.11.2
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cpe:2.3:a:elastic:logstash:8.11.3
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cpe:2.3:a:elastic:logstash:8.11.4
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cpe:2.3:a:elastic:logstash:8.12.0
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cpe:2.3:a:elastic:logstash:8.12.1
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cpe:2.3:a:elastic:logstash:8.12.2
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cpe:2.3:a:elastic:logstash:8.13.0
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cpe:2.3:a:elastic:logstash:8.13.1
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cpe:2.3:a:elastic:logstash:8.13.2
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cpe:2.3:a:elastic:logstash:8.13.3
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cpe:2.3:a:elastic:logstash:8.13.4
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cpe:2.3:a:elastic:logstash:8.14.0
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cpe:2.3:a:elastic:logstash:8.14.1
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cpe:2.3:a:elastic:logstash:8.14.2
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cpe:2.3:a:elastic:logstash:8.14.3
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cpe:2.3:a:elastic:logstash:8.15.0
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cpe:2.3:a:elastic:logstash:8.15.1
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cpe:2.3:a:elastic:logstash:8.15.2
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cpe:2.3:a:elastic:logstash:8.15.3
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cpe:2.3:a:elastic:logstash:8.15.4
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cpe:2.3:a:elastic:logstash:8.15.5
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cpe:2.3:a:elastic:logstash:8.16.0
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cpe:2.3:a:elastic:logstash:8.16.1
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cpe:2.3:a:elastic:logstash:8.16.2
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cpe:2.3:a:elastic:logstash:8.16.3
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cpe:2.3:a:elastic:logstash:8.16.4
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cpe:2.3:a:elastic:logstash:8.16.5
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cpe:2.3:a:elastic:logstash:8.16.6
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cpe:2.3:a:elastic:logstash:8.17.0
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cpe:2.3:a:elastic:logstash:8.17.1
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cpe:2.3:a:elastic:logstash:8.17.10
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cpe:2.3:a:elastic:logstash:8.17.2
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cpe:2.3:a:elastic:logstash:8.17.3
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cpe:2.3:a:elastic:logstash:8.17.4
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cpe:2.3:a:elastic:logstash:8.17.5
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cpe:2.3:a:elastic:logstash:8.17.6
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cpe:2.3:a:elastic:logstash:8.17.7
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cpe:2.3:a:elastic:logstash:8.17.8
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cpe:2.3:a:elastic:logstash:8.17.9
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cpe:2.3:a:elastic:logstash:8.18.0
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cpe:2.3:a:elastic:logstash:8.18.1
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cpe:2.3:a:elastic:logstash:8.18.2
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cpe:2.3:a:elastic:logstash:8.18.3
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cpe:2.3:a:elastic:logstash:8.18.4
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cpe:2.3:a:elastic:logstash:8.18.5
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cpe:2.3:a:elastic:logstash:8.18.6
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cpe:2.3:a:elastic:logstash:8.18.7
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cpe:2.3:a:elastic:logstash:8.18.8
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cpe:2.3:a:elastic:logstash:8.19.0
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cpe:2.3:a:elastic:logstash:8.19.1
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cpe:2.3:a:elastic:logstash:8.19.10
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cpe:2.3:a:elastic:logstash:8.19.11
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cpe:2.3:a:elastic:logstash:8.19.12
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cpe:2.3:a:elastic:logstash:8.19.13
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cpe:2.3:a:elastic:logstash:8.19.2
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cpe:2.3:a:elastic:logstash:8.19.3
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cpe:2.3:a:elastic:logstash:8.19.4
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cpe:2.3:a:elastic:logstash:8.19.5
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cpe:2.3:a:elastic:logstash:8.19.6
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cpe:2.3:a:elastic:logstash:8.19.7
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cpe:2.3:a:elastic:logstash:8.19.8
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cpe:2.3:a:elastic:logstash:8.19.9
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cpe:2.3:a:elastic:logstash:8.2.0
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cpe:2.3:a:elastic:logstash:8.2.1
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cpe:2.3:a:elastic:logstash:8.2.2
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cpe:2.3:a:elastic:logstash:8.2.3
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cpe:2.3:a:elastic:logstash:8.3.0
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cpe:2.3:a:elastic:logstash:8.3.1
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cpe:2.3:a:elastic:logstash:8.3.2
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cpe:2.3:a:elastic:logstash:8.3.3
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cpe:2.3:a:elastic:logstash:8.4.0
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cpe:2.3:a:elastic:logstash:8.4.1
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cpe:2.3:a:elastic:logstash:8.4.2
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cpe:2.3:a:elastic:logstash:8.4.3
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cpe:2.3:a:elastic:logstash:8.5.0
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cpe:2.3:a:elastic:logstash:8.5.1
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cpe:2.3:a:elastic:logstash:8.5.2
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cpe:2.3:a:elastic:logstash:8.5.3
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cpe:2.3:a:elastic:logstash:8.6.0
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cpe:2.3:a:elastic:logstash:8.6.1
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cpe:2.3:a:elastic:logstash:8.6.2
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cpe:2.3:a:elastic:logstash:8.7.0
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cpe:2.3:a:elastic:logstash:8.7.1
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cpe:2.3:a:elastic:logstash:8.8.0
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cpe:2.3:a:elastic:logstash:8.8.1
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cpe:2.3:a:elastic:logstash:8.8.2
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cpe:2.3:a:elastic:logstash:8.9.0
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cpe:2.3:a:elastic:logstash:8.9.1
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cpe:2.3:a:elastic:logstash:8.9.2
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cpe:2.3:a:elastic:logstash:9.0.0
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cpe:2.3:a:elastic:logstash:9.0.1
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cpe:2.3:a:elastic:logstash:9.0.2
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cpe:2.3:a:elastic:logstash:9.0.3
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cpe:2.3:a:elastic:logstash:9.0.4
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cpe:2.3:a:elastic:logstash:9.0.5
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cpe:2.3:a:elastic:logstash:9.0.6
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cpe:2.3:a:elastic:logstash:9.0.7
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cpe:2.3:a:elastic:logstash:9.0.8
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cpe:2.3:a:elastic:logstash:9.1.0
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cpe:2.3:a:elastic:logstash:9.1.1
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cpe:2.3:a:elastic:logstash:9.1.10
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cpe:2.3:a:elastic:logstash:9.1.2
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cpe:2.3:a:elastic:logstash:9.1.3
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cpe:2.3:a:elastic:logstash:9.1.4
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cpe:2.3:a:elastic:logstash:9.1.5
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cpe:2.3:a:elastic:logstash:9.1.6
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cpe:2.3:a:elastic:logstash:9.1.7
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cpe:2.3:a:elastic:logstash:9.1.8
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cpe:2.3:a:elastic:logstash:9.1.9
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cpe:2.3:a:elastic:logstash:9.2.0
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cpe:2.3:a:elastic:logstash:9.2.1
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cpe:2.3:a:elastic:logstash:9.2.2
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cpe:2.3:a:elastic:logstash:9.2.3
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cpe:2.3:a:elastic:logstash:9.2.4
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cpe:2.3:a:elastic:logstash:9.2.5
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cpe:2.3:a:elastic:logstash:9.2.6
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cpe:2.3:a:elastic:logstash:9.2.7
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cpe:2.3:a:elastic:logstash:9.3.0
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cpe:2.3:a:elastic:logstash:9.3.1
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cpe:2.3:a:elastic:logstash:9.3.2