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Vulnerabilities CVE-2026-72643

CVE-2026-72643

High
Open
TLP:CLEAR

Incorrect Authorization in Kibana Agent Builder Leading to Disclosure and Tampering of Private Agents

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Description

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.

Details

CVSS Score
7.1
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Confidence
90%
Published
Aug 13, 2026
Last Modified
Aug 13, 2026
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