CVE-2026-26934
Medium
Description
Improper Validation of Specified Quantity in Input (CWE-1284) in Kibana can allow an authenticated attacker with view-only privileges to cause a Denial of Service via Input Data Manipulation (CAPEC-153). An attacker can send a specially crafted, malformed payload causing excessive resource consumption and resulting in Kibana becoming unresponsive or crashing.
SeverityMedium
CVSS6.5
Exploit probability—
Product
Elastic Kibana
PublishedFeb 26, 2026
First seenFeb 26, 2026
Weakness typeCWE-1284CWE-1284
How to fix
Update
- elastic kibana8.19.12, 9.2.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| elastic kibana | 8.18.0 ≤ v < 8.19.12, 9.0.0 ≤ v < 9.2.6, 9.3.0 | 8.19.12, 9.2.6 |
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