Vulnerability · CVE-2026-102406
Authorization Bypass Through User-Controlled Key in Kibana Leading to Cross-Tenant Data Interception
Published Oct 14, 2026 · catalog updated Oct 14, 2026 · Authorization Bypass Through User-Controlled
Check if you run it
No confirmed exploitation is on record for CVE-2026-102406. EPSS is 0.34%. Act only if a listed version of Authorization Bypass Through User-Controlled is installed.
Gaps on this record
- The stored product name is a package slug. The name on this page is taken from the title (Authorization Bypass Through User-Controlled).
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- High—
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.34%
- Remediation
- Advisory link
- Affected products
- Bitnami elk · Bitnami kibana
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.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- Bitnami elk8.14.0 → 8.19.22
- Bitnami kibana8.14.0 → 8.19.22
How to fix CVE-2026-102406
Recommended remediation
A patch or advisory reference is linked. Open the original publisher for availability by product version.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2026-102406. EPSS is 0.34%. Act only if a listed version of Authorization Bypass Through User-Controlled is installed.
Which versions are affected?
Compare what you have installed with 8.14.0 → 8.19.22. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.34%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Oct 14, 2026 · OpenSSF OSV / OSV Scanner
Detected
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
Oct 14, 2026 · OpenSSF OSV / OSV Scanner
Fix available
elk fixed in 8.19.22
Oct 14, 2026 · OpenSSF OSV / OSV Scanner
Fix available
elk fixed in 8.19.22
Oct 14, 2026 · OpenSSF OSV / OSV Scanner
Fix available
kibana fixed in 8.19.22
Oct 14, 2026 · OpenSSF OSV / OSV Scanner
Fix available
kibana fixed in 8.19.22
Oct 14, 2026 · OpenSSF OSV / OSV Scanner
Updated
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
Sources
- CVE.orgVulnerability recordCVE-2026-102406
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-102406
30-day exploitation probability 0.3%
first.org - OpenSSF OSV / OSV ScannerPackage advisoryBIT-elk-2026-102406
Authorization Bypass Through User-Controlled Key in Kibana Leading to Cross-Tenant Data Interception
osv.dev - OpenSSF OSV / OSV ScannerPackage advisoryBIT-kibana-2026-102406
Authorization Bypass Through User-Controlled Key in Kibana Leading to Cross-Tenant Data Interception
osv.dev
References
Freshness
Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.