Elk: Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Service (CVE-2026-72667)
CVE-2026-72667 is a vulnerability in Kibana where resource allocation occurs without limits or throttling. An authenticated user with minimal privileges can submit a specially crafted request to the Observability log analysis feature, causing unbounded concurrent work. This can exhaust Kibana's memory, leading to denial of service until the service is restarted. The impact varies with deployment resources; well-provisioned systems may experience degraded performance rather than full outages. The vulnerability affects Kibana versions 8.0.0 up to but not including 8.19.20 and 9.0.0 up to but not including 9.4.5. A patch is available to address this issue.
AI Analysis
Technical Summary
This vulnerability involves allocation of resources without limits or throttling (CWE-770) in Kibana's Observability log analysis validation feature. An authenticated user with minimal privileges can trigger excessive concurrent processing by submitting a crafted request, which leads to memory exhaustion of the Kibana process. This results in denial of service, making Kibana unavailable until restarted. The severity depends on the deployment's resource capacity; less provisioned deployments are more likely to experience full outages. The vulnerability affects Kibana versions >=8.0.0 <8.19.20 and >=9.0.0 <9.4.5. A patch is available to mitigate this issue.
Potential Impact
The vulnerability can cause denial of service by exhausting memory resources of the Kibana process. This leads to unavailability of Kibana for all users until the service is restarted. On well-provisioned deployments, the impact may be limited to degraded performance and elevated memory pressure. The attack requires an authenticated user with minimal privileges and involves sending a crafted request to the Observability log analysis feature.
Mitigation Recommendations
A patch is available for this vulnerability. Users should upgrade Kibana to versions 8.19.20 or later, or 9.4.5 or later, where this issue is fixed. Since this is not a cloud service, remediation requires applying the patch or upgrade manually. No additional mitigation steps are indicated by the vendor advisory.
Elk: Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Service (CVE-2026-72667)
Description
CVE-2026-72667 is a vulnerability in Kibana where resource allocation occurs without limits or throttling. An authenticated user with minimal privileges can submit a specially crafted request to the Observability log analysis feature, causing unbounded concurrent work. This can exhaust Kibana's memory, leading to denial of service until the service is restarted. The impact varies with deployment resources; well-provisioned systems may experience degraded performance rather than full outages. The vulnerability affects Kibana versions 8.0.0 up to but not including 8.19.20 and 9.0.0 up to but not including 9.4.5. A patch is available to address this issue.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves allocation of resources without limits or throttling (CWE-770) in Kibana's Observability log analysis validation feature. An authenticated user with minimal privileges can trigger excessive concurrent processing by submitting a crafted request, which leads to memory exhaustion of the Kibana process. This results in denial of service, making Kibana unavailable until restarted. The severity depends on the deployment's resource capacity; less provisioned deployments are more likely to experience full outages. The vulnerability affects Kibana versions >=8.0.0 <8.19.20 and >=9.0.0 <9.4.5. A patch is available to mitigate this issue.
Potential Impact
The vulnerability can cause denial of service by exhausting memory resources of the Kibana process. This leads to unavailability of Kibana for all users until the service is restarted. On well-provisioned deployments, the impact may be limited to degraded performance and elevated memory pressure. The attack requires an authenticated user with minimal privileges and involves sending a crafted request to the Observability log analysis feature.
Mitigation Recommendations
A patch is available for this vulnerability. Users should upgrade Kibana to versions 8.19.20 or later, or 9.4.5 or later, where this issue is fixed. Since this is not a cloud service, remediation requires applying the patch or upgrade manually. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- BIT-kibana-2026-72667
- Osv Schema Version
- 1.6.2
- Aliases
- ["CVE-2026-72667"]
- Ecosystems
- ["Bitnami"]
- Database Specific Severity
- Medium
- Cvss Version
- null
Threat ID: 6a85b4aaacd9273b49250ee8
Added to database: 08/19/2026, 13:50:34 UTC
Last enriched: 08/19/2026, 14:02:46 UTC
Last updated: 08/19/2026, 22:52:15 UTC
Views: 3
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