What is CVE-2026-33466?

CVE-2026-33466 is a high-severity vulnerability in Elastic Logstash, classified under Path Traversal. CVSS score: 8.1/10. Published 2026-04-08.

How severe is CVE-2026-33466?

High severity. CVSS v3 base score is 8.1 out of 10.

Path Traversal in Elastic Logstash

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 Logst…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.006 (69.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Elastic Logstash — versions 8.0.0

Weakness classification (CWE)

CWE-22 — Path Traversal

References

discuss.elastic.co/t/logstash-8-19-14-9-2-8-9-3-3-security-update-esa-2026-29/3…

Frequently asked questions

What is CVE-2026-33466?: CVE-2026-33466 is a high-severity vulnerability in Elastic Logstash, classified under Path Traversal. CVSS score: 8.1/10. Published 2026-04-08.
How severe is CVE-2026-33466?: High severity. CVSS v3 base score is 8.1 out of 10.