What’s Vulnerable › Vulnerabilities
CVE-2026-63260: Uncontrolled Resource Consumption 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: 2026-07-21 · updated 2026-10-24
- Weakness: CWE-400
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.
Affected products
- Kibana: from 8.0.0 before 8.19.19; from 9.0.0 before 9.3.8; from 9.4.0 before 9.4.4 — fixed in 8.19.19, 9.3.8, 9.4.4
How to fix
Upgrade to a fixed version: Kibana 8.19.19, 9.3.8, 9.4.4. Check the vendor advisory for mitigations.
References
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