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CVE-2026-49095— Improper Input Validation in Kibana Fleet Leading to Privilege Escalation

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.

Elastic Kibana是Elastic公司的一个可用数据可视化仪表板软件。 Elastic Kibana存在安全漏洞，该漏洞源于输入验证不当，可能导致权限提升。具有Fleet管理权限的经过身份验证的用户可以通过向配置覆盖机制注入未充分验证的值来操纵代理策略配置，攻击者可以导致Elastic Agents被颁发具有提升的Elasticsearch权限的API密钥，可能授予对敏感Elasticsearch安全索引的未经授权的读写访问权限。

CVSS 7.2 · Medium EPSS 0.46% · P37

Affected Version Matrix 3

VendorProduct Version RangeStatus
Elastic Kibana 9.0.0≤ 9.3.4 affected
9.4.0≤ 9.4.1 affected
8.0.0≤ 8.19.15 affected
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I. Basic Information for CVE-2026-49095

Vulnerability Information
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Vulnerability Title
Improper Input Validation in Kibana Fleet Leading to Privilege Escalation
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Input Validation (CWE-20) in the Kibana Fleet agent policy management feature can lead to privilege escalation. An authenticated user with Fleet management privileges can manipulate agent policy configuration by injecting values into a configuration override mechanism that is not adequately validated. An attacker can cause Elastic Agents to be issued API keys with elevated Elasticsearch privileges, potentially granting unauthorized read and write access to sensitive Elasticsearch security indices beyond what is intended for the Fleet management role.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Elastic Kibana 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Elastic Kibana是Elastic公司的一个可用数据可视化仪表板软件。 Elastic Kibana存在安全漏洞，该漏洞源于输入验证不当，可能导致权限提升。具有Fleet管理权限的经过身份验证的用户可以通过向配置覆盖机制注入未充分验证的值来操纵代理策略配置，攻击者可以导致Elastic Agents被颁发具有提升的Elasticsearch权限的API密钥，可能授予对敏感Elasticsearch安全索引的未经授权的读写访问权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Elastic Kibana 9.0.0 ~ 9.3.4 -

II. Public POCs for CVE-2026-49095

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III. Intelligence Information for CVE-2026-49095

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Vendor Advisories for CVE-2026-49095 (1)

Same Patch Batch · Elastic · 2026-05-28 · 10 CVEs total

CVE-2026-42398 7.7 HIGH Server-Side Request Forgery (SSRF) in Kibana Leading to Unauthorized Network Access
CVE-2026-33464 6.5 MEDIUM Uncontrolled Resource Consumption in Kibana Leading to Denial of Service
CVE-2026-42399 6.5 MEDIUM Uncontrolled Resource Consumption in Kibana Leading to Denial of Service
CVE-2026-42400 6.5 MEDIUM Uncontrolled Resource Consumption in Kibana Leading to Denial of Service
CVE-2026-49094 6.5 MEDIUM Uncontrolled Resource Consumption in Kibana Leading to Denial of Service
CVE-2026-49093 6.3 MEDIUM Server-Side Request Forgery (SSRF) in Kibana Leading to Unauthorized Network Access
CVE-2026-33463 5.3 MEDIUM Operation on a Resource after Expiration or Termination in Kibana Leading to Unauthorized
CVE-2026-33462 4.6 MEDIUM Path Traversal in Kibana Leading to Unauthorized Deletion of User Accounts
CVE-2026-42401 4.1 MEDIUM Improper Neutralization of Input During Web Page Generation in Kibana Leading to Stored HT

IV. Related Vulnerabilities

Same product: Kibana
Same vendor: Elastic
Same weakness: CWE-20

V. Comments for CVE-2026-49095

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