CVE-2026-72628: CWE-409 Improper Handling of Highly Compressed Data (Data Amplification) in Elastic Kibana
Description
Improper Handling of Highly Compressed Data (CWE-409) in Kibana can lead to a denial of service via Excessive Allocation (CAPEC-130). An authenticated user holding Streams management privileges could supply specially crafted content that expands to a far larger volume of data during processing, exhausting the memory available to Kibana. The Kibana process is terminated by the host and remains unavailable to all users until the service is restarted.
CVSS v3.1
Score 6.5medium
Affected software
Elastic
Kibana
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-409) in Elastic Kibana allows an authenticated user with Streams management privileges to trigger a denial of service condition by submitting highly compressed data that expands to a much larger size during processing. The excessive memory allocation causes the Kibana process to be terminated by the host system, resulting in service unavailability until manual restart. The CVSS 3.1 score is 6.5 (medium), reflecting network attack vector, low attack complexity, required privileges, no user interaction, and impact limited to availability.
Potential Impact
The impact is denial of service (DoS) due to memory exhaustion caused by data amplification during processing of crafted compressed content. This results in the Kibana process being terminated and the service becoming unavailable to all users until the host restarts the process. There is no confidentiality or integrity impact reported.
Mitigation Recommendations
No official patch or remediation is currently available for this vulnerability. Users should monitor the vendor advisory for updates. Until a fix is provided, limiting the assignment of Streams management privileges to trusted users may reduce risk. Restarting the Kibana service restores availability after a crash.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- elastic
- Date Reserved
- 2026-08-10T11:17:29.887Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a972606acd9273b491915be
Added to database: 09/01/2026, 19:22:46 UTC
Last enriched: 09/07/2026, 14:19:26 UTC
Last updated: 10/14/2026, 18:48:23 UTC
Views: 40
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