← Back

CVE-2026-33466

nvd nist
Published: Apr 8, 2026Modified: Jul 24, 2026

JSON object

Loading...
9.8
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability: 3.9 / Impact: 5.9
Source: NVD

Description

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.

Affected (3)

Products: Elastic: Logstash
Elastic
1 product
Logstash
Configuration A
3 vulnerable
Vulnerable SoftwareAffected Versions
Elastic
Logstash
From 8.0.0 to 8.19.14
Logstash
From 9.0.0 to 9.2.8
Logstash
From 9.3.0 to 9.3.3

Related CWEs

CWE-22
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

References (1)

Source: security@elastic.co
MitigationVendor Advisory

Timeline

No history available yet.