Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana could lead to cross-tenant data interception.
Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana could lead to cross-tenant data interception. In this context, "tenant" refers to a user or team sharing the same Kibana deployment, not a separate Elastic Cloud organization or customer. Kibana's Fleet package installation process allowed a user holding delegated Fleet package-management privileges, without direct Elasticsearch administrative privileges, to claim a data stream identifier already in use by another tenant. Because ownership of that identifier was not verified before Fleet applied the uploaded package's generat
Read at NIST National Vulnerability Database (CVE API 2.0)
- Vendor
- Elastic
- Product
- Elasticsearch / Kibana
- CVSS
- 8.8
- Exposure class
- Database
Why it ranks 15 (Routine)
- CVSS 8.8 high
- Product class: database
- Recency: items published within 24 hours gain 15, within 72 hours 6, within 7 days 2.
Links
- NIST National Vulnerability Database (CVE API 2.0) (nvd.nist.gov)
- CVE-2026-102406 on this site · NVD · CVE.org · Vulnpedia
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