CVE-2026-78588: Elastic Filebeat

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Allocation of Resources Without Limits or Throttling (CWE-770) in Filebeat can lead to a denial of service via Excessive Allocation (CAPEC-130). An attacker able to reach the Filebeat HTTP ingestion endpoint could send specially crafted compressed requests that exhaust the memory resources of the Filebeat process.

Affected products

• Elastic Filebeat: from 8.0.0, before 8.19.18 (fixed in 8.19.18); from 9.0.0, before 9.3.1 (fixed in 9.3.1)

Published 2026-09-02. Last modified 2026-09-03.