Is CVE-2026-78591 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-78591?

CVE-2026-78591 has a CVSS v3 severity of MEDIUM (6.3).

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CVE-2026-78591

Description

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (CWE-22) in the Kibana Fleet feature can lead to the unauthorized deletion of resources via Path Traversal (CAPEC-126). A low-privileged user could cause a subsequent action taken by a higher-privileged user in the Fleet administration interface to act on an unintended target, resulting in the deletion of resources including accounts with elevated privileges.