CVE-2026-78581: CWE-639 Authorization Bypass Through User-Controlled Key in Elastic Kibana
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.
CVE-2026-78581: CWE-639 Authorization Bypass Through User-Controlled Key in 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.
CVSS v3.1
Score 4.2medium
Affected software
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- elastic
- Date Reserved
- 2026-08-24T21:13:45.971Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a8d9722acd9273b493979d7
Added to database: 08/25/2026, 13:22:42 UTC
Last updated: 08/25/2026, 13:38:17 UTC
Views: 4
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