CVE-2026-56149
Allocation of Resources Without Limits or Throttling in Elasticsearch Leading to Denial of Service
4.9
MEDIUM
CVSS 3.1
EPSS 0.32%
Description
Allocation of Resources Without Limits or Throttling (CWE-770) in Elasticsearch can lead to a denial of service via Excessive Allocation (CAPEC-130). A user with elevated privileges can submit a specially crafted machine learning request that causes excessive memory consumption, which may render the affected node unavailable.
How to fix CVE-2026-56149
To remediate CVE-2026-56149, upgrade the affected package to a fixed version below.
- —upgrade to 8.19.17 or later
Is CVE-2026-56149 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 8.0.0, < 8.19.17, >= 9.0.0, < 9.3.6, >= 9.4.0, < 9.4.3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H |