Medium severity · published Sep 2, 2026
CVE-2026-78588
Allocation of Resources Without Limits or Throttling in Filebeat Leading to Denial of Service
6.5
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Filebeat · Elastic
8.0.0 through 8.19.17; 9.0.0 through 9.3.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-78588
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-78588
Mitigation
https://discuss.elastic.co/t/filebeat-8-19-18-9-3-1-security-update-esa-2026-165/390118
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