CVE-2026-72643: Kibana Agent Builder determines whether a caller owns a private agent by comparing a stable user identifier when one is recorded, and falling back to a…

PriorityP340high7.1CVSS 3.1

AVNACLPRLUINSUCHILAN

EPSS

0.38%

30.5th percentile

Kibana Agent Builder determines whether a caller owns a private agent by comparing a stable user identifier when one is recorded, and falling back to a comparison of the username when it is not. A username is not unique across Elasticsearch authentication realms, so two distinct principals that share a username in different realms are treated as the same owner. This discloses the configuration and instructions of an agent the caller does not own, and allows that agent to be altered or removed.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
elastic	kibana	—	—
elastic	kibana	>= 9.4.0 < 9.4.5	9.4.5
elastic	kibana	9.4.0 – 9.4.4	—

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