Allocation of Resources Without Limits or Throttling in Filebeat - CVE-2026-78588
Published: September 2, 2026
Vulnerability identifier: #VU146671
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-78588
CWE-ID: CWE-770
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to allocation of resources without limits or throttling in the Filebeat HTTP ingestion endpoint when handling specially crafted compressed requests. A remote user can send specially crafted compressed requests to cause a denial of service.
Only deployments where the HTTP endpoint input has been explicitly enabled are affected. This input is disabled by default.
Affected software
Filebeat
How to mitigate CVE-2026-78588
Install security update from vendor's website.
Filebeat - addressed in versions 8.19.18, 9.3.1