CVE-2026-56145: CWE-400 Uncontrolled Resource Consumption in Elastic Elasticsearch
Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). A low-privileged authenticated user with permission to execute EQL sequence queries against an index they control can send a specially crafted query that triggers excessive memory consumption, causing the Elasticsearch node to crash.
AI Analysis
Technical Summary
This vulnerability in Elasticsearch allows a low-privileged authenticated user to send a specially crafted EQL sequence query against an index they control, causing excessive memory consumption. This uncontrolled resource consumption (CWE-400) can lead to denial of service by crashing the Elasticsearch node. The attack vector requires network access and low privileges but no user interaction. The impact is availability loss without confidentiality or integrity compromise. No known exploits are reported in the wild, and no patch or official fix details are available at this time.
Potential Impact
The vulnerability results in denial of service (availability impact) due to excessive memory allocation triggered by crafted EQL sequence queries. There is no impact on confidentiality or integrity. The Elasticsearch node may crash, disrupting service availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict permissions to execute EQL sequence queries to trusted users only and monitor for unusual query patterns that might indicate attempts to exploit this vulnerability.
CVE-2026-56145: CWE-400 Uncontrolled Resource Consumption in Elastic Elasticsearch
Description
Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). A low-privileged authenticated user with permission to execute EQL sequence queries against an index they control can send a specially crafted query that triggers excessive memory consumption, causing the Elasticsearch node to crash.
CVSS v3.1
Score 6.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Elasticsearch allows a low-privileged authenticated user to send a specially crafted EQL sequence query against an index they control, causing excessive memory consumption. This uncontrolled resource consumption (CWE-400) can lead to denial of service by crashing the Elasticsearch node. The attack vector requires network access and low privileges but no user interaction. The impact is availability loss without confidentiality or integrity compromise. No known exploits are reported in the wild, and no patch or official fix details are available at this time.
Potential Impact
The vulnerability results in denial of service (availability impact) due to excessive memory allocation triggered by crafted EQL sequence queries. There is no impact on confidentiality or integrity. The Elasticsearch node may crash, disrupting service availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict permissions to execute EQL sequence queries to trusted users only and monitor for unusual query patterns that might indicate attempts to exploit this vulnerability.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-5h86-ph4p-6p7w
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-56145"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a600aaa9c2644c7f8fe0346
Added to database: 07/22/2026, 00:11:22 UTC
Last enriched: 07/22/2026, 00:43:04 UTC
Last updated: 08/31/2026, 01:03:27 UTC
Views: 50
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