What’s Vulnerable › Vulnerabilities
CVE-2026-72628: Improper Handling of Highly Compressed Data in Kibana Leading to Denial of Service
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-01 · updated 2026-09-02
- Weakness: CWE-409
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.
Affected products
- Kibana: from 8.19.0 before 8.19.21; from 9.0.0 before 9.4.6; from 9.5.0 before 9.5.2 — fixed in 8.19.21, 9.4.6, 9.5.2
How to fix
Upgrade to a fixed version: Kibana 8.19.21, 9.4.6, 9.5.2. Check the vendor advisory for mitigations.
References
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