CVE-2026-0531: Elastic Kibana

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana Fleet can lead to Excessive Allocation (CAPEC-130) via a specially crafted bulk retrieval request. This requires an attacker to have low-level privileges equivalent to the viewer role, which grants read access to agent policies. The crafted request can cause the application to perform redundant database retrieval operations that immediately consume memory until the server crashes and becomes unavailable to all users.

Affected products

• Elastic Kibana: from 7.10.0, before 7.17.29 (fixed in 7.17.29); from 8.0.0, before 8.19.10 (fixed in 8.19.10); from 9.0.0, before 9.1.10 (fixed in 9.1.10); from 9.2.0, before 9.2.4 (fixed in 9.2.4)

Published 2026-01-13. Last modified 2026-06-17.