Is CVE-2026-33466 actively exploited?

No active exploitation of CVE-2026-33466 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-33466 be exploited remotely?

Yes. CVE-2026-33466 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-33466?

CVE-2026-33466 has a CVSS score of 8.1 (HIGH).

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HIGH

CVE-2026-33466

CWE-22Published: April 8, 2026· Updated: Apr 8, 2026

8.1

CVSS v3.1

EPSS:0.28%probability of exploitation in 30 daysPercentile:51.0th

Official 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.

NVD Source

Technical Analysis

CVE-2026-33466 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.1.