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Kibana CVE-2026-72659

| EUVDEUVD-2026-58270 MEDIUM
Allocation of Resources Without Limits or Throttling (CWE-770)
2026-08-13 elastic GHSA-g48r-38gh-835c
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

Network-reachable endpoint, low complexity, requires only a valid low-privileged session; sole impact is high availability loss via process crash.

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
Aug 13, 2026 - 20:09 vuln.today
CVE Published
Aug 13, 2026 - 19:12 cve.org
MEDIUM 6.5

DescriptionCVE.org

Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). A specially crafted, malformed payload submitted to a Kibana visualization feature by an authenticated user holding only low-privileged access is not correctly validated before use. Processing the request causes unbounded memory growth in the Kibana process, which is terminated by the host once available memory is exhausted. Kibana then becomes unavailable to all users until the service is restarted.

AnalysisAI

Denial of service in Elastic Kibana allows any authenticated low-privileged user to crash the entire Kibana service for all users by submitting a specially crafted, malformed payload to a visualization feature. The root cause is CWE-770 (resource allocation without throttling): Kibana fails to validate the malformed input before processing, causing unbounded heap growth until the host OS kills the process. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation Exploitation requires a valid authenticated Kibana session with at minimum low-privileged access (PR:L per CVSS vector). … 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) scores 6.5 (Medium), which accurately reflects the real-world risk profile. … 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 8.19.20 (for 8.x deployments) or 9.4.5 (for 9.x deployments), as referenced in Elastic Security Advisory ESA-2026-100 at https://discuss.elastic.co/t/kibana-8-19-20-9-4-5-security-update-esa-2026-100/389519. … Detailed patch versions, workarounds, and compensating controls in full report.
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Same weakness CWE-770 – Allocation of Resources Without Limits or Throttling

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CVE-2026-72659 vulnerability details – vuln.today
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