CVE-2026-56149mediumCWE-770

CVE-2026-56149: medium-severity vulnerability in Elasticsearch

Allocation of Resources Without Limits or Throttling in Elasticsearch Leading to Denial of Service

Published

Follow this CVE+ Monitor Elasticsearch

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 4.9epss 0.5%
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.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Affected products
Elastic · Elasticsearch
Related CVEs — Elasticsearch

In the same product, most dangerous first.

CVE-2021-22145—CVE-2021-22145EPSS 76.2%CVE-2023-31419MEDIUMElasticsearch StackOverflow vulnerabilityEPSS 61.1%CVE-2019-7619—CVE-2019-7619EPSS 2.4%CVE-2019-7611—CVE-2019-7611EPSS 2.1%CVE-2023-31418HIGHElasticsearch uncontrolled resource consumptionEPSS 2.1%CVE-2018-3831—CVE-2018-3831EPSS 2.0%