CVE-2026-33466
8.1 · HIGHOverview
CVE-2026-33466 is a high-severity vulnerability affecting elastic logstash. It was published on April 8, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from elastic. Update logstash to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| elastic | logstash | >= 8.0.0, < 8.19.14 | Affected |
Frequently Asked Questions
What is CVE-2026-33466?
CVE-2026-33466 is a high-severity vulnerability affecting elastic logstash. It was published on April 8, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).
How severe is CVE-2026-33466?
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-33466?
Check the references section for vendor advisories and patches from elastic. Update logstash to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-33466?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-33466 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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