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Vulnerability Details :

CVE-2026-56149

Summary
Assigner-elastic
Assigner Org ID-271b6943-45a9-4f3a-ab4e-976f3fa05b5a
Published At-01 Jul, 2026 | 16:21
Updated At-01 Jul, 2026 | 17:25
Rejected At-
Credits

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

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:elastic
Assigner Org ID:271b6943-45a9-4f3a-ab4e-976f3fa05b5a
Published At:01 Jul, 2026 | 16:21
Updated At:01 Jul, 2026 | 17:25
Rejected At:
▼CVE Numbering Authority (CNA)
Allocation of Resources Without Limits or Throttling in Elasticsearch Leading to Denial of Service

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.

Affected Products
Vendor
Elasticsearch BVElastic
Product
Elasticsearch
Default Status
unaffected
Versions
Affected
  • From 9.4.0 through 9.4.2 (semver)
  • From 9.0.0 through 9.3.5 (semver)
  • From 8.0.0 through 8.19.16 (semver)
Problem Types
TypeCWE IDDescription
CWECWE-770CWE-770 Allocation of Resources Without Limits or Throttling
Type: CWE
CWE ID: CWE-770
Description: CWE-770 Allocation of Resources Without Limits or Throttling
Metrics
VersionBase scoreBase severityVector
3.14.9MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Version: 3.1
Base score: 4.9
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
CAPEC-130CAPEC-130 Excessive Allocation
CAPEC ID: CAPEC-130
Description: CAPEC-130 Excessive Allocation
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://discuss.elastic.co/t/elasticsearch-8-19-17-9-3-6-9-4-3-security-update-esa-2026-43
N/A
Hyperlink: https://discuss.elastic.co/t/elasticsearch-8-19-17-9-3-6-9-4-3-security-update-esa-2026-43
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security@elastic.co
Published At:01 Jul, 2026 | 17:16
Updated At:01 Jul, 2026 | 18:16

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.14.9MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
N/A
Type: Secondary
Version: 3.1
Base score: 4.9
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Type: N/A
Version:
Base score:
Base severity: N/A
Vector:
CPE Matches

Weaknesses
CWE IDTypeSource
CWE-770Secondarysecurity@elastic.co
CWE ID: CWE-770
Type: Secondary
Source: security@elastic.co
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://discuss.elastic.co/t/elasticsearch-8-19-17-9-3-6-9-4-3-security-update-esa-2026-43security@elastic.co
N/A
Hyperlink: https://discuss.elastic.co/t/elasticsearch-8-19-17-9-3-6-9-4-3-security-update-esa-2026-43
Source: security@elastic.co
Resource: N/A

Change History

0
Information is not available yet

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