CVE-2026-78581EPSS p9.3%

CVE-2026-78581CVE-2026-78581

elastic / kibana

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.

Scoring

CVSS 4.2 ()
VectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
EPSS0.20% probability of exploitation · percentile 9.3% · 2026-10-05T12:00:23Z
Last modified2026-09-02
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.