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CVE-2026-72662— Authorization Bypass Through User-Controlled Key in Kibana Leading to Unauthorized Disclosure, Modification, and Deletion of Data

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 中存在通过用户可控键实现的授权绕过漏洞（CWE-639），可通过“访问未被访问控制列表（ACL）适当限制的功能”（CAPEC-1）导致数据遭未经授权的披露、修改和删除。在 Kibana 的某一空间中，被授予“时间线（Timeline）”功能权限的认证用户，能够枚举、读取、修改并删除同一空间内其他用户创建的草稿时间线对象。其中，读取权限足以实现枚举和数据披露；而时间线写入权限则用于执行修改和删除操作。

CVSS 6.3 · Medium EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2026-72662

Vulnerability Information
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Vulnerability Title
Authorization Bypass Through User-Controlled Key in Kibana Leading to Unauthorized Disclosure, Modification, and Deletion of Data
Source: CVE Program / CVE List V5
Vulnerability Description
Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead to unauthorized disclosure, modification, and deletion of data via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). An authenticated user granted the Timeline feature privilege in a Kibana space could enumerate, read, modify, and delete draft Timeline objects belonging to other users in the same space. Read access is sufficient for enumeration and disclosure; the Timeline write privilege is required for modification and deletion.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
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

Vendor Product Affected Versions CPE Subscribe
Elastic Kibana 8.0.0 ~ 8.19.21 -

II. Public POCs for CVE-2026-72662

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III. Intelligence Information for CVE-2026-72662

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Other References for CVE-2026-72662 (1)

Same Patch Batch · Elastic · 2026-09-26 · 11 CVEs total

CVE-2026-72668 7.3 HIGH Unintended Proxy or Intermediary ('Confused Deputy') in Kibana Leading to Privilege Escala
CVE-2026-94397 6.5 MEDIUM Uncontrolled Resource Consumption in Elasticsearch Leading to denial of service
CVE-2026-94396 6.5 MEDIUM Uncontrolled Resource Consumption in Elasticsearch Leading to denial of service
CVE-2026-94400 6.5 MEDIUM Uncontrolled Resource Consumption in Kibana Leading to denial of service
CVE-2026-94399 6.5 MEDIUM Uncontrolled Resource Consumption in Elasticsearch Leading to denial of service
CVE-2026-94398 6.5 MEDIUM Uncontrolled Resource Consumption in Elasticsearch Leading to denial of service
CVE-2026-82300 6.5 MEDIUM Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service
CVE-2026-82294 6.5 MEDIUM Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service
CVE-2026-78582 6.5 MEDIUM Missing Authorization in Kibana Leading to Unauthorized Deletion of Data
CVE-2026-94408 4.9 MEDIUM Uncontrolled Resource Consumption in Elasticsearch Leading to denial of service

IV. Related Vulnerabilities

Same product: Kibana
Same vendor: Elastic
Same weakness: CWE-639

V. Comments for CVE-2026-72662

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