CVE-2026-63260: CWE-400 Uncontrolled Resource Consumption in Elastic Kibana
Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated attacker with low-privilege access can trigger a denial of service condition in Kibana by sending a specially crafted, oversized request payload. Processing this user-supplied input requires resource-intensive memory allocation that can exhaust the available heap memory in the Kibana process, causing it to crash and become unavailable to all users.
AI Analysis
Technical Summary
This vulnerability (CWE-400) in Elastic Kibana involves uncontrolled resource consumption via excessive memory allocation triggered by processing a crafted oversized request payload. An authenticated attacker with low privileges can exploit this to exhaust heap memory in the Kibana process, causing it to crash and deny service to all users. The vulnerability affects specific versions 8.0.0, 9.0.0, and 9.4.0. There is no vendor advisory indicating an available patch or fix at this time.
Potential Impact
Successful exploitation results in denial of service by crashing the Kibana process due to heap memory exhaustion. This impacts availability but does not affect confidentiality or integrity. The attacker requires authenticated access with low privileges to trigger the condition.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to Kibana to trusted users and monitor for unusual request sizes or patterns that could indicate exploitation attempts.
CVE-2026-63260: CWE-400 Uncontrolled Resource Consumption in Elastic Kibana
Description
Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated attacker with low-privilege access can trigger a denial of service condition in Kibana by sending a specially crafted, oversized request payload. Processing this user-supplied input requires resource-intensive memory allocation that can exhaust the available heap memory in the Kibana process, causing it to crash and become unavailable to all users.
CVSS v3.1
Score 6.5medium
Affected software
pkg:github/elastic/kibanaRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-400) in Elastic Kibana involves uncontrolled resource consumption via excessive memory allocation triggered by processing a crafted oversized request payload. An authenticated attacker with low privileges can exploit this to exhaust heap memory in the Kibana process, causing it to crash and deny service to all users. The vulnerability affects specific versions 8.0.0, 9.0.0, and 9.4.0. There is no vendor advisory indicating an available patch or fix at this time.
Potential Impact
Successful exploitation results in denial of service by crashing the Kibana process due to heap memory exhaustion. This impacts availability but does not affect confidentiality or integrity. The attacker requires authenticated access with low privileges to trigger the condition.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to Kibana to trusted users and monitor for unusual request sizes or patterns that could indicate exploitation attempts.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- elastic
- Date Reserved
- 2026-07-16T03:26:51.579Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a5ffbc59c2644c7f8e8d0ef
Added to database: 07/21/2026, 23:07:49 UTC
Last enriched: 07/21/2026, 23:22:55 UTC
Last updated: 07/22/2026, 00:10:22 UTC
Views: 4
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