CVE-2026-33466
Improper Limitation of a Pathname to a Restricted Directory in Logstash Leading to Arbitrary File Write
描述
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.
如何修補 CVE-2026-33466
要修補 CVE-2026-33466,請將受影響套件升級到下列已修補版本。
- —升級至 8.19.14 或更新版本
CVE-2026-33466 正在被利用嗎?
低 — EPSS 為 0.5%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- >= 8.0.0, < 8.19.14, >= 9.0.0, < 9.2.8, >= 9.3.0, < 9.3.3
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |