CVE-2026-102406

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 generated index and ingest-pipeline settings to already-existing infrastructure, an attacker could redirect an existing tenant's data stream through infrastructure under their control. This exposed the affected tenant's subsequently ingested data to unauthorized disclosure and modification, and prevented that data from reaching its intended destination. Interception could continue even after the malicious package was removed, requiring separate remediation of the affected infrastructure.

• CWE-639

• https://discuss.elastic.co/t/kibana-8-19-22-9-4-7-9-5-4-security-update-esa-2026-187/390860Vendor Advisory, Mitigation

Published

Oct 6, 2026

Last Modified

Oct 13, 2026

Status

Analyzed

• Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-102398Unauthenticated Cross Site Scripting (XSS) in Popup by Supsy…7.1
• CVE-2026-102399Unauthenticated Cross Site Request Forgery (CSRF) in Photo G…5.4
• CVE-2026-10240A vulnerability was identified in JeecgBoot up to 3.9.2. The…6.3
• CVE-2026-102401The Download Manager plugin for WordPress is vulnerable to S…6.4
• CVE-2026-102402The Team – Team Members Showcase Plugin plugin for WordPress…6.4
• CVE-2026-102404Uncontrolled Resource Consumption (CWE-400) in Elasticsearch…6.5
• CVE-2026-102407Incorrect Authorization (CWE-863) in Elasticsearch can lead …5.4
• CVE-2026-102408Inefficient Regular Expression Complexity (CWE-1333) in Elas…4.3
• CVE-2026-102409Uncontrolled Recursion (CWE-674) in Elasticsearch can allow …6.5
• CVE-2026-10241A security flaw has been discovered in jeecgboot The server …6.3
• CVE-2026-102410Missing Authorization (CWE-862) in Kibana can lead to inform…4.3
• CVE-2026-102411Allocation of Resources Without Limits or Throttling (CWE-77…6.5