CVE-2026-78581 — Authorization Bypass Through User-Controlled Key in Kibana Leading to Unauthorized Data Modification in Kibana

CVE-2026-78581

Authorization Bypass Through User-Controlled Key in Kibana Leading to Unauthorized Data Modification in Kibana PUBLISHED

Description (CNA)

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 (CNA)

Vendor / product	Versions
Elastic / Kibana	affected 8.0.0 through 8.16.2

CWE

CWE-639

References

https://discuss.elastic.co/t/kibana-8-16-3-8-17-2-security-update-esa-2026-51/387446

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.