Is CVE-2026-78581 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-78581?

CVE-2026-78581 has a CVSS v3 severity of MEDIUM (4.2).

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CVE-2026-78581

Description

Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead to unauthorized data modification via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). Under certain conditions, an authenticated user could reference another user's AI Assistant conversation identifier to access or modify a conversation they do not own. Successful exploitation requires knowledge of a hard-to-guess identifier.