CVE-2026-78581
Authorization Bypass Through User-Controlled Key in Kibana Leading to Unauthorized Data Modification in Kibana
CVSS Score
4.2
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-639 |
| Vendor | elastic |
| Product | kibana |
| Published | Aug 25, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
Elastic / Kibana
8.0.0 ≤ 8.16.2