CVE-2026-78581— Authorization Bypass Through User-Controlled Key in Kibana Leading to Unauthorized Data Modification in Kibana
Quick assessment
Affected
Elastic Kibana
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Kibana 中存在用户可控键绕过授权（CWE-639）漏洞，可能导致通过访问未被访问控制列表（ACL）充分约束的功能（CAPEC-1）来执行未授权的数据修改。在某些条件下，已认证的用户可以引用其他用户的 AI 助手会话标识符，从而访问或修改不属于他们自己的会话。成功利用该漏洞需要获取一个难以猜测的标识符。
Possible ATT&CK Techniques 1 AI
T1078 · Valid Accounts
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I. Basic Information for CVE-2026-78581
Vulnerability Information
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Vulnerability Title
Authorization Bypass Through User-Controlled Key in Kibana Leading to Unauthorized Data Modification in Kibana
Source: CVE Program / CVE List V5
Vulnerability Description
Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead to unauthorized data modification via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). Under certain conditions, an authenticated user could reference another user's AI Assistant conversation identifier to access or modify a conversation they do not own. Successful exploitation requires knowledge of a hard-to-guess identifier.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-78581
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-78581 (1)
IV. Related Vulnerabilities
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Same weakness: CWE-639
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V. Comments for CVE-2026-78581
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