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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.

PUBLISHED Reserved 2026-02-16 | Published 2026-02-26 | Updated 2026-02-26 | Assigner elastic




MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem types

CWE-1284 Improper Validation of Specified Quantity in Input

Product status

Default status
unaffected

8.18.0 (semver)
affected

9.0.0 (semver)
affected

9.3.0 (semver)
affected

References

discuss.elastic.co/...3-1-security-update-esa-2026-12/385248

cve.org (CVE-2026-26934)

nvd.nist.gov (CVE-2026-26934)

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