What’s Vulnerable › Vulnerabilities
CVE-2026-72643: Incorrect Authorization in Kibana Agent Builder Leading to Disclosure and Tampering of Private Agents
- Severity: high (CVSS 7.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-13 · updated 2026-09-03
- Weakness: CWE-863
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.
Affected products
- Kibana: from 9.4.0 before 9.4.5; 9.5.0 — fixed in 9.4.5
How to fix
Upgrade to a fixed version: Kibana 9.4.5. Check the vendor advisory for mitigations.
References
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