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CVE-2026-78581

nvd nist
Published: Aug 25, 2026Modified: Sep 2, 2026

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4.2
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Exploitability: 1.6 / Impact: 2.5
Source: security@elastic.co (Secondary)

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.

Affected (2)

Products: Elastic: Kibana
Elastic
1 product
Kibana
Configuration A
2 vulnerable
Vulnerable SoftwareAffected Versions
Elastic
Kibana
From 8.0.0 to 8.16.3
Kibana
From 8.17.0 to 8.17.2

Related CWEs

CWE-639
Authorization Bypass Through User-Controlled Key
The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

References (1)

Source: security@elastic.co
Vendor Advisory

Timeline

No history available yet.