CVE-2026-49089: CWE-770 Allocation of Resources Without Limits or Throttling in Elastic Kibana
Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). A query expression accepted by a connector reporting operation was processed without any limit on its size, and an oversized expression caused the Kibana process to spend an unbounded amount of time evaluating it. An authenticated user with read-only privileges was able to send a single request that left Kibana unable to serve any user until the process was restarted.
AI Analysis
Technical Summary
This vulnerability (CWE-770) in Elastic Kibana involves the allocation of resources without limits or throttling during the processing of a query expression in a connector reporting operation. An oversized query expression can cause the Kibana process to consume excessive resources and become unresponsive, effectively causing a denial of service. The flaw can be exploited by an authenticated user with read-only privileges by sending a single malicious request. There is no official patch or remediation level indicated in the vendor data, and no known exploits in the wild have been reported.
Potential Impact
An authenticated user with read-only privileges can cause a denial of service condition by sending a single oversized query expression, which causes Kibana to become unresponsive until the process is restarted. This impacts availability but does not affect confidentiality or integrity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, monitor for unusual query sizes and consider restricting access to trusted users only. Restarting the Kibana process restores service after an attack.
CVE-2026-49089: CWE-770 Allocation of Resources Without Limits or Throttling in Elastic Kibana
Description
Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). A query expression accepted by a connector reporting operation was processed without any limit on its size, and an oversized expression caused the Kibana process to spend an unbounded amount of time evaluating it. An authenticated user with read-only privileges was able to send a single request that left Kibana unable to serve any user until the process was restarted.
CVSS v3.1
Score 6.5medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-770) in Elastic Kibana involves the allocation of resources without limits or throttling during the processing of a query expression in a connector reporting operation. An oversized query expression can cause the Kibana process to consume excessive resources and become unresponsive, effectively causing a denial of service. The flaw can be exploited by an authenticated user with read-only privileges by sending a single malicious request. There is no official patch or remediation level indicated in the vendor data, and no known exploits in the wild have been reported.
Potential Impact
An authenticated user with read-only privileges can cause a denial of service condition by sending a single oversized query expression, which causes Kibana to become unresponsive until the process is restarted. This impacts availability but does not affect confidentiality or integrity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, monitor for unusual query sizes and consider restricting access to trusted users only. Restarting the Kibana process restores service after an attack.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- elastic
- Date Reserved
- 2026-05-27T11:31:33.582Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a7e1a7fbf8831d539b180d7
Added to database: 08/13/2026, 19:26:55 UTC
Last enriched: 08/13/2026, 20:13:09 UTC
Last updated: 08/13/2026, 23:01:08 UTC
Views: 3
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