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CVE-2026-26938— Improper Neutralization of Special Elements Used in a Template Engine in Kibana Workflows Leading to Server-Side Request Forgery (SSRF)

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Workflows中存在模板引擎特殊元素中和不当，可能导致具有workflowsManagement:executeWorkflow权限的经过身份验证的用户读取Kibana服务器文件系统中的任意文件，并执行服务端请求伪造。

CVSS 8.6 · High EPSS 0.44% · P36
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I. Basic Information for CVE-2026-26938

Vulnerability Information
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Vulnerability Title
Improper Neutralization of Special Elements Used in a Template Engine in Kibana Workflows Leading to Server-Side Request Forgery (SSRF)
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Neutralization of Special Elements Used in a Template Engine (CWE-1336) exists in Workflows in Kibana which could allow an attacker to read arbitrary files from the Kibana server filesystem, and perform Server-Side Request Forgery (SSRF) via Code Injection (CAPEC-242). This requires an authenticated user who has the workflowsManagement:executeWorkflow privilege.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1336
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Workflows中存在模板引擎特殊元素中和不当，可能导致具有workflowsManagement:executeWorkflow权限的经过身份验证的用户读取Kibana服务器文件系统中的任意文件，并执行服务端请求伪造。
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 9.3.0 ~ 9.3.0 -

II. Public POCs for CVE-2026-26938

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III. Intelligence Information for CVE-2026-26938

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Same Patch Batch · Elastic · 2026-02-26 · 6 CVEs total

CVE-2026-26937 6.5 MEDIUM Uncontrolled Resource Consumption in Kibana Leading to Denial of Service
CVE-2026-26935 6.5 MEDIUM Improper Input Validation in Kibana Leading to Denial of Service
CVE-2026-26934 6.5 MEDIUM Improper Validation of Specified Quantity in Input in Kibana Leading to Denial of Service
CVE-2026-26932 5.7 MEDIUM Improper Validation of Array Index in Packetbeat Leading to Denial of Service
CVE-2026-26936 4.9 MEDIUM Inefficient Regular Expression Complexity in Kibana Leading to Denial of Service

IV. Related Vulnerabilities

Same product: Kibana
Same vendor: Elastic
Same weakness: CWE-1336

V. Comments for CVE-2026-26938

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