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CVE-2026-78593— Improper Control of Generation of Code in Kibana 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是荷兰Elastic公司开源的一个视觉化仪表板。 Elastic kibana 8.0.0至8.19.20版本、9.0.0至9.4.5版本和9.5.0至9.5.2版本存在代码注入漏洞，该漏洞源于Cribl集成中的配置字段验证不足，导致持有Kibana Fleet管理权限的已认证用户可将攻击者控制的表达式注入服务器端脚本模板，从而越权写入Elasticsearch摄取管道。

CVSS 4.3 · Medium EPSS 0.29% · P21

Possible ATT&CK Techniques 1 AI

T1059.001 · PowerShell

Affected Version Matrix 3

VendorProduct Version RangeStatus
Elastic Kibana 8.0.0≤ 8.19.20 affected
9.0.0≤ 9.4.5 affected
9.5.0≤ 9.5.2 affected
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I. Basic Information for CVE-2026-78593

Vulnerability Information
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Vulnerability Title
Improper Control of Generation of Code in Kibana Leading to Privilege Escalation
Source: CVE Program / CVE List V5
Vulnerability Description
An insufficiently validated configuration field in Kibana's Cribl integration allows an authenticated user holding Kibana Fleet management privileges to inject attacker-controlled expressions into a server-side script template, resulting in an Elasticsearch ingest pipeline being written beyond the caller's authorized Elasticsearch permissions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Elastic kibana 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Elastic Kibana是荷兰Elastic公司开源的一个视觉化仪表板。 Elastic kibana 8.0.0至8.19.20版本、9.0.0至9.4.5版本和9.5.0至9.5.2版本存在代码注入漏洞，该漏洞源于Cribl集成中的配置字段验证不足，导致持有Kibana Fleet管理权限的已认证用户可将攻击者控制的表达式注入服务器端脚本模板，从而越权写入Elasticsearch摄取管道。
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 8.0.0 ~ 8.19.20 -

II. Public POCs for CVE-2026-78593

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III. Intelligence Information for CVE-2026-78593

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Vendor Advisories for CVE-2026-78593 (1)

Same Patch Batch · Elastic · 2026-09-03 · 7 CVEs total

CVE-2026-82302 8.1 HIGH Incorrect Authorization in Kibana Leading to Unauthorized Configuration Modification
CVE-2026-78583 8.1 HIGH Incorrect Authorization in Kibana Leading to Privilege Escalation
CVE-2026-82299 6.5 MEDIUM Incorrect Authorization in Kibana Leading to Information Disclosure
CVE-2026-82298 4.3 MEDIUM Incorrect Authorization in Kibana Leading to Denial of Service
CVE-2026-78596 4.3 MEDIUM Missing Authorization in Kibana Leading to Unauthorized Cross-Space Write Operations
CVE-2026-78595 4.3 MEDIUM Missing Authorization in Kibana Fleet Plugin Leading to Cross-Space Agent Data Disclosure

IV. Related Vulnerabilities

Same product: Kibana
Same vendor: Elastic
Same weakness: CWE-94

V. Comments for CVE-2026-78593

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