Vulnerability Report

CVE-2026-56149

Title: Allocation of Resources Without Limits or Throttling in Elasticsearch

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2026-56149.

CWE Category CWE-770

Published Date Jul 01, 2026

Modified Date Jul 02, 2026

Exploit Status Not Found

Score 4.9 CVSS v3.1

Exploit Probability (EPSS)

0.32%

Vulnerability Summary

CVE-2026-56149: 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.

Impacted Vendors

elastic 1

anynines 1

Reference Links

https://discuss.elastic.co/t/elasticsearch-8-19-17-9-3-6-9-4-3-security-update-esa-2026-43

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

4.9

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-56149 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

July 02, 2026 MODIFIED

Vulnerability data updated via NVD.

July 01, 2026 MODIFIED

Vulnerability data updated via NVD.

July 01, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


                                    CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Affected Stack

No specific products linked.