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CVE-2026-49088— Insertion of Sensitive Information into Log File in Kibana Leading to Information Disclosure

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公司开源的一个数据可视化平台。 Elastic Kibana存在日志信息泄露漏洞，该漏洞源于可选的应用性能监控启用时，敏感请求标头值可能被记录到应用程序日志中，导致信息泄露。以下版本受到影响：8.0.0至8.18.8版本、9.1.0至9.1.5版本、9.0.0至9.0.7版本和8.19.0至8.19.5版本。

CVSS 4.4 · Medium EPSS 0.32% · P23

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 4

VendorProduct Version RangeStatus
Elastic Kibana 8.0.0≤ 8.18.8 affected
9.1.0≤ 9.1.5 affected
9.0.0≤ 9.0.7 affected
8.19.0≤ 8.19.5 affected
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I. Basic Information for CVE-2026-49088

Vulnerability Information
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Vulnerability Title
Insertion of Sensitive Information into Log File in Kibana Leading to Information Disclosure
Source: CVE Program / CVE List V5
Vulnerability Description
Insertion of Sensitive Information into Log File (CWE-532) in Kibana can lead to information disclosure. When the optional application performance monitoring (APM) instrumentation is enabled, sensitive request header values could be recorded in application logs, where they may be accessible to operators with log access.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过日志文件的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Elastic Kibana 日志信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Elastic kibana是荷兰Elastic公司开源的一个数据可视化平台。 Elastic Kibana存在日志信息泄露漏洞，该漏洞源于可选的应用性能监控启用时，敏感请求标头值可能被记录到应用程序日志中，导致信息泄露。以下版本受到影响：8.0.0至8.18.8版本、9.1.0至9.1.5版本、9.0.0至9.0.7版本和8.19.0至8.19.5版本。
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 ~ 8.18.8 -

II. Public POCs for CVE-2026-49088

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III. Intelligence Information for CVE-2026-49088

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Vendor Advisories for CVE-2026-49088 (1)

Same Patch Batch · Elastic · 2026-07-01 · 9 CVEs total

CVE-2026-49091 8.0 HIGH Improper Output Neutralization for Logs in Kibana Leading to Log Injection
CVE-2026-49090 6.5 MEDIUM Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service
CVE-2026-49087 6.5 MEDIUM Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Servic
CVE-2026-56150 6.5 MEDIUM Allocation of Resources Without Limits or Throttling in Fleet Server Leading to Denial of
CVE-2026-56148 6.5 MEDIUM Uncontrolled Recursion in Elasticsearch Leading to Denial of Service
CVE-2026-56151 6.5 MEDIUM Improper Input Validation in Kibana Leading to Denial of Service
CVE-2026-56152 5.3 MEDIUM Incorrect Authorization in Kibana Leading to Information Disclosure
CVE-2026-56149 4.9 MEDIUM Allocation of Resources Without Limits or Throttling in Elasticsearch Leading to Denial of

IV. Related Vulnerabilities

Same product: Kibana
Same vendor: Elastic
Same weakness: CWE-532

V. Comments for CVE-2026-49088

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