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Kibana CVE-2026-72644

| EUVDEUVD-2026-69563 MEDIUM
Uncaught Exception (CWE-248)
2026-09-01 elastic GHSA-6932-j9j3-frp3
Denial Of Service Elastic Kibana
6.5
CVSS 3.1 · Vendor: elastic
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Severity by source

Vendor (elastic) PRIMARY
6.5 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
vuln.today AI
6.5 MEDIUM

Low-privileged account required for Observability AI Assistant; network-accessible web app with no complexity; availability-only impact via process crash, no data exposure.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (elastic).

CVSS VectorVendor: elastic

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

2
Analysis Generated
Sep 01, 2026 - 19:57 vuln.today
CVE Published
Sep 01, 2026 - 19:20 cve.org
MEDIUM 6.5

DescriptionCVE.org

Uncaught Exception (CWE-248) in Kibana can lead to a denial of service via Input Data Manipulation (CAPEC-153). An authenticated user holding only the low-privileged feature access required to use the Observability AI Assistant can submit a specially crafted request that produces an unhandled error condition, terminating the Kibana process and denying service to all users and spaces on that instance until it is restarted.

AnalysisAI

Uncaught exception handling in Kibana's Observability AI Assistant allows any low-privileged authenticated user to crash the entire Kibana Node.js process by submitting a specially crafted request, denying service to all users and spaces on that instance until an administrator manually restarts it. The blast radius is instance-wide regardless of the attacker's permission scope, making this disproportionately severe relative to its CVSS 6.5 Medium rating. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Delivery
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Exploit
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Execution
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Vulnerability AssessmentAI

Exploitation Exploitation requires a valid Kibana user account with at minimum the low-privileged feature access needed to interact with the Observability AI Assistant - specifically, the account must have the Kibana role or space privilege granting access to that feature. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 vector AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H captures the core risk accurately: network-reachable, low complexity, and requiring only a low-privileged account, with total availability loss and no confidentiality or integrity impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade Kibana to version 9.4.5 (stable branch) or 9.5.1 (current branch) as documented in Elastic's security advisory ESA-2026-115 at https://discuss.elastic.co/t/kibana-9-4-5-9-5-1-security-update-esa-2026-115/390088. … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-72644 vulnerability details – vuln.today
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