ElasticCVE-2026-72643
Elastic Kibana: improper authorization
High7.1CVE-2026-72643 · Published Aug 13, 2026 · updated Sep 3, 2026
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 versions
| Package | Affected | Fixed in |
|---|---|---|
| Kibana Product | >= 9.4.0, <= 9.4.4 | No fix yet |
| <= 9.5.0 | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-863
More Elastic advisories
All Elastic| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Aug 13 | Elasticsearch: denial of service | Medium6.5 | No fix yet |
| Aug 13 | A flaw in Elasticsearch | Medium4.3 | No fix yet |
| Aug 13 | Elasticsearch: denial of service | Medium6.5 | No fix yet |
| Aug 13 | Elasticsearch: denial of service | Medium6.5 | No fix yet |
| Aug 13 | Elastic Kibana: denial of service | Medium6.5 | No fix yet |
| Aug 13 | Elastic Kibana: missing authorization | High7.1 | No fix yet |