Elk: Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Service (CVE-2026-72651)
CVE-2026-72651 is a medium severity vulnerability in Kibana where an authenticated user with read-only alerting privileges can submit a malformed payload that causes excessive resource consumption. This resource exhaustion leads to denial of service, making Kibana unresponsive until the process is restarted. The issue 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 vulnerability.
AI Analysis
Technical Summary
This vulnerability involves allocation of resources without limits or throttling in Kibana's alerting feature. An authenticated user with read-only access can send a specially crafted malformed payload that triggers excessive resource allocation, resulting in denial of service. The attack requires only a single request to disrupt service for all users until Kibana is restarted. The affected versions are >=8.0.0 <8.19.20 and >=9.0.0 <9.4.5. No known exploits are reported in the wild. A patch is available to mitigate this issue.
Potential Impact
Successful exploitation causes the Kibana process to consume excessive system resources, leading to denial of service. This results in Kibana becoming unresponsive and unable to serve requests for all users until the process is restarted. The impact affects availability but does not indicate data compromise or privilege escalation.
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 the issue is fixed. Until patched, restricting access to the alerting feature or monitoring for unusual resource consumption may help mitigate risk, but the primary remediation is to apply the official fix.
Elk: Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Service (CVE-2026-72651)
Description
CVE-2026-72651 is a medium severity vulnerability in Kibana where an authenticated user with read-only alerting privileges can submit a malformed payload that causes excessive resource consumption. This resource exhaustion leads to denial of service, making Kibana unresponsive until the process is restarted. The issue 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 vulnerability.
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 in Kibana's alerting feature. An authenticated user with read-only access can send a specially crafted malformed payload that triggers excessive resource allocation, resulting in denial of service. The attack requires only a single request to disrupt service for all users until Kibana is restarted. The affected versions are >=8.0.0 <8.19.20 and >=9.0.0 <9.4.5. No known exploits are reported in the wild. A patch is available to mitigate this issue.
Potential Impact
Successful exploitation causes the Kibana process to consume excessive system resources, leading to denial of service. This results in Kibana becoming unresponsive and unable to serve requests for all users until the process is restarted. The impact affects availability but does not indicate data compromise or privilege escalation.
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 the issue is fixed. Until patched, restricting access to the alerting feature or monitoring for unusual resource consumption may help mitigate risk, but the primary remediation is to apply the official fix.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- BIT-kibana-2026-72651
- Osv Schema Version
- 1.6.2
- Aliases
- ["CVE-2026-72651"]
- Ecosystems
- ["Bitnami"]
- Database Specific Severity
- Medium
- Cvss Version
- null
Threat ID: 6a85b4aaacd9273b49250f0a
Added to database: 08/19/2026, 13:50:34 UTC
Last enriched: 08/19/2026, 14:05:45 UTC
Last updated: 08/20/2026, 02:52:00 UTC
Views: 4
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