Information Disclosure in Kibana by Elastic
CVE-2026-78603

4.3MEDIUM

Key Information:

Vendor

Elastic
Status
Kibana
Vendor
CVE Published:
1 September 2026

What is CVE-2026-78603?

A vulnerability in Kibana allows authenticated users with minimal Elasticsearch privileges to bypass authorization mechanisms. This oversight can lead to an unauthorized disclosure of sensitive Fleet deployment metadata from the default Kibana space, thus compromising data integrity and privacy.

Affected Version(s)

Kibana 9.0.0 <= 9.4.5

Kibana 9.5.0

References

https://discuss.elastic.co/t/kibana-9-4-6-9-5-1-security-...

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.