Path Traversal in Elastic Kibana

CVE-2026-78591

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.

Vulnerability class: Path Traversal (Directory Traversal)

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:L.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-78591?
CVE-2026-78591 is a medium-severity vulnerability in Elastic Kibana, classified under Path Traversal. CVSS score: 6.3/10. Published 2026-09-02.
How severe is CVE-2026-78591?
Medium severity. CVSS v3 base score is 6.3 out of 10.