Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-72632— Observable Discrepancy in Kibana Fleet Leading to Disclosure of Elastic Agent Elasticsearch API Keys

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 8.19.0版本至8.19.19版本、9.0.0版本至9.4.4版本和9.5.0版本存在侧信道信息泄露漏洞，该漏洞源于Kibana Fleet存在可观察差异，接受调用者提供的过滤器表达式并使用Kibana自身内部Elasticsearch权限评估，导致匹配数量差异形成侧信道，可能导致信息泄露，攻击者可逐字符重建完整的API key值。

CVSS 7.1 · High EPSS 0.35% · P26

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 3

VendorProduct Version RangeStatus
Elastic Kibana 8.19.0≤ 8.19.19 affected
9.0.0≤ 9.4.4 affected
9.5.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-72632

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Observable Discrepancy in Kibana Fleet Leading to Disclosure of Elastic Agent Elasticsearch API Keys
Source: CVE Program / CVE List V5
Vulnerability Description
Observable Discrepancy (CWE-203) in Kibana Fleet can lead to information disclosure via Excavation (CAPEC-116). Fleet removes the Elasticsearch API key value of an enrolled Elastic Agent from the responses of its agent listing capability, but that capability accepted caller-supplied filter expressions over the stored field that holds the value, and evaluated them with Kibana's own internal Elasticsearch privileges rather than the caller's. Because the number of matching agents is reported back to the caller, the difference between a matching and a non-matching filter formed a side channel from which the full API key value could be reconstructed one character at a time with a short sequence of requests.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过差异性导致的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Elastic Kibana 侧信道信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Elastic Kibana是荷兰Elastic公司开源的一个视觉化仪表板。 Elastic Kibana 8.19.0版本至8.19.19版本、9.0.0版本至9.4.4版本和9.5.0版本存在侧信道信息泄露漏洞，该漏洞源于Kibana Fleet存在可观察差异，接受调用者提供的过滤器表达式并使用Kibana自身内部Elasticsearch权限评估，导致匹配数量差异形成侧信道，可能导致信息泄露，攻击者可逐字符重建完整的API key值。
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 8.19.0 ~ 8.19.19 -

II. Public POCs for CVE-2026-72632

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-72632

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-72632 (1)

Same Patch Batch · Elastic · 2026-08-13 · 48 CVEs total

CVE-2026-72642 8.8 HIGH Use of Out-of-range Pointer Offset in the Elasticsearch Machine Learning Native Inference
CVE-2026-72665 8.1 HIGH Missing Authorization in Kibana Leading to Unauthorized Execution of Host Response Actions
CVE-2026-72670 7.7 HIGH Exposure of Sensitive Information to an Unauthorized Actor in Kibana Leading to Disclosure
CVE-2026-72672 7.7 HIGH Incorrect Authorization in Kibana Leading to Disclosure of Elastic Defend Endpoint Event D
CVE-2026-72669 7.6 HIGH Missing Authorization in Kibana Leading to Cross-User Information Disclosure and Data Tamp
CVE-2026-72677 7.3 HIGH Relative Path Traversal in Kibana Fleet Leading to Unauthorized Deletion of Users and Othe
CVE-2026-72658 7.3 HIGH Cross-Site Request Forgery in Kibana Leading to Privilege Escalation
CVE-2026-72629 7.1 HIGH Authorization Bypass Through User-Controlled Key in Kibana Leading to Cross-Space Access t
CVE-2026-72630 7.1 HIGH Incorrect Authorization in Kibana Fleet Leading to Privilege Escalation
CVE-2026-72675 7.1 HIGH Missing Authorization in Kibana Machine Learning Leading to Cross-Space Information Disclo
CVE-2026-72643 7.1 HIGH Incorrect Authorization in Kibana Agent Builder Leading to Disclosure and Tampering of Pri
CVE-2026-72666 6.8 MEDIUM Authorization Bypass Through User-Controlled Key in Kibana Leading to Unauthorized Query E
CVE-2026-72653 6.5 MEDIUM Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Servic
CVE-2026-72674 6.5 MEDIUM Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Servic
CVE-2026-72660 6.5 MEDIUM Uncaught Exception in Kibana Leading to Denial of Service
CVE-2026-72684 6.5 MEDIUM Allocation of Resources Without Limits or Throttling in Elasticsearch Leading to Denial of
CVE-2026-49089 6.5 MEDIUM Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Servic
CVE-2026-72651 6.5 MEDIUM Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Servic
CVE-2026-72661 6.5 MEDIUM Missing Authorization in Kibana Leading to Information Disclosure
CVE-2026-72663 6.5 MEDIUM Inefficient Algorithmic Complexity in Kibana Leading to Denial of Service

Showing top 20 of 48 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Kibana
Same vendor: Elastic
Same weakness: CWE-203

V. Comments for CVE-2026-72632

No comments yet

Leave a comment