Uncontrolled Resource Consumption in Kibana Leading to Denial of Service

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Summary

CVECVE-2026-63139
StatePUBLISHED
Assignerelastic
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-21 21:16:52 UTC
Updated2026-07-22 20:37:38 UTC
DescriptionUncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated low-privileged user can exploit an uncontrolled resource consumption vulnerability in Kibana's Canvas functionality by sending a specially crafted request, causing the Kibana server process to terminate and resulting in a denial of service for all users of the affected Kibana instance.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.002350000 probability, percentile 0.144760000 (date 2026-07-22)

Problem Types: CWE-400 | CWE-400 CWE-400 Uncontrolled Resource Consumption

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1CNACVSS6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

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

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Elastic Kibana affected 8.0.0 8.19.18 semver Not specified
CNA Elastic Kibana affected 9.4.0 9.4.3 semver Not specified
CNA Elastic Kibana affected 9.3.0 9.3.7 semver Not specified

References

ReferenceSourceLinkTags
discuss.elastic.co/t/kibana-8-19-19-9-3-8-9-4-4-security-update-esa-2026-63/388560 [email protected] discuss.elastic.co
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