Missing Authorization in Kibana Leading to Cross-User Information Disclosure and Data Tampering
The state that Kibana stores for an Observability Onboarding flow is not bound to the user who created the flow, and the routes that read and update that state do not verify ownership. An authenticated user who holds only generic read access to the space can therefore discover the onboarding flows of other users, read their onboarding state, and write arbitrary progress data into them. A tampered flow can also cause the owner's onboarding view to fail with a server error.
Affected Versions:
- All versions from 8.9.0 up to and including 8.19.18
- All versions from 9.0.0 up to and including 9.4.4
Affected Configurations:
- All configurations are affected.
Solutions and Mitigations:
The issue is resolved in versions 8.19.19 and 9.4.5.
For Users that Cannot Upgrade:
- There are no workarounds for this vulnerability.
Indicators of Compromise (IOC)
No specific indicators of compromise have been identified for this vulnerability.
Elastic Cloud Serverless
Due to our continuous deployment and patching model, the vulnerability described in this security advisory was remediated in our Elastic Cloud Serverless offering before the public disclosure.
Severity: CVSSv3.1: High ( 7.6 ) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
CVE ID: CVE-2026-72669
Problem Type: CWE-862 - Missing Authorization